/**
* Called via ctx->Driver.Bitmap()
*/
static void
st_Bitmap(struct gl_context *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap )
{
struct st_context *st = st_context(ctx);
struct pipe_resource *pt;
if (width == 0 || height == 0)
return;
st_validate_state(st);
if (!st->bitmap.vs) {
/* create pass-through vertex shader now */
const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
TGSI_SEMANTIC_COLOR,
st->needs_texcoord_semantic ? TGSI_SEMANTIC_TEXCOORD :
TGSI_SEMANTIC_GENERIC };
const uint semantic_indexes[] = { 0, 0, 0 };
st->bitmap.vs = util_make_vertex_passthrough_shader(st->pipe, 3,
semantic_names,
semantic_indexes,
FALSE);
}
if (UseBitmapCache && accum_bitmap(ctx, x, y, width, height, unpack, bitmap))
return;
pt = make_bitmap_texture(ctx, width, height, unpack, bitmap);
if (pt) {
struct pipe_sampler_view *sv =
st_create_texture_sampler_view(st->pipe, pt);
assert(pt->target == PIPE_TEXTURE_2D || pt->target == PIPE_TEXTURE_RECT);
if (sv) {
draw_bitmap_quad(ctx, x, y, ctx->Current.RasterPos[2],
width, height, sv,
st->ctx->Current.RasterColor);
pipe_sampler_view_reference(&sv, NULL);
}
/* release/free the texture */
pipe_resource_reference(&pt, NULL);
}
}
/**
* Called via ctx->Driver.Bitmap()
*/
static void
st_Bitmap(struct gl_context *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap )
{
struct st_context *st = st_context(ctx);
struct pipe_resource *pt;
assert(width > 0);
assert(height > 0);
st_invalidate_readpix_cache(st);
if (!st->bitmap.cache) {
init_bitmap_state(st);
}
/* We only need to validate any non-ST_NEW_CONSTANTS state. The VS we use
* for bitmap drawing uses no constants and the FS constants are
* explicitly uploaded in the draw_bitmap_quad() function.
*/
if ((st->dirty | ctx->NewDriverState) & ~ST_NEW_CONSTANTS &
ST_PIPELINE_RENDER_STATE_MASK ||
st->gfx_shaders_may_be_dirty) {
st_validate_state(st, ST_PIPELINE_RENDER);
}
if (UseBitmapCache && accum_bitmap(ctx, x, y, width, height, unpack, bitmap))
return;
pt = make_bitmap_texture(ctx, width, height, unpack, bitmap);
if (pt) {
struct pipe_sampler_view *sv =
st_create_texture_sampler_view(st->pipe, pt);
assert(pt->target == PIPE_TEXTURE_2D || pt->target == PIPE_TEXTURE_RECT);
if (sv) {
draw_bitmap_quad(ctx, x, y, ctx->Current.RasterPos[2],
width, height, sv, ctx->Current.RasterColor);
pipe_sampler_view_reference(&sv, NULL);
}
/* release/free the texture */
pipe_resource_reference(&pt, NULL);
}
}
static void
st_RasterPos(struct gl_context *ctx, const GLfloat v[4])
{
struct st_context *st = st_context(ctx);
struct draw_context *draw = st->draw;
struct rastpos_stage *rs;
if (st->rastpos_stage) {
/* get rastpos stage info */
rs = rastpos_stage(st->rastpos_stage);
}
else {
/* create rastpos draw stage */
rs = new_draw_rastpos_stage(ctx, draw);
st->rastpos_stage = &rs->stage;
}
/* plug our rastpos stage into the draw module */
draw_set_rasterize_stage(st->draw, st->rastpos_stage);
/* make sure everything's up to date */
st_validate_state(st);
/* This will get set only if rastpos_point(), above, gets called */
ctx->Current.RasterPosValid = GL_FALSE;
/* All vertex attribs but position were previously initialized above.
* Just plug in position pointer now.
*/
rs->array[0].Ptr = (GLubyte *) v;
/* draw the point */
st_feedback_draw_vbo(ctx, rs->arrays, &rs->prim, 1, NULL, GL_TRUE, 0, 1,
NULL);
/* restore draw's rasterization stage depending on rendermode */
if (ctx->RenderMode == GL_FEEDBACK) {
draw_set_rasterize_stage(draw, st->feedback_stage);
}
else if (ctx->RenderMode == GL_SELECT) {
draw_set_rasterize_stage(draw, st->selection_stage);
}
}
/**
* Called via glReadBuffer.
*/
static void
st_ReadBuffer(struct gl_context *ctx, GLenum buffer)
{
struct st_context *st = st_context(ctx);
struct gl_framebuffer *fb = ctx->ReadBuffer;
(void) buffer;
/* Check if we need to allocate a front color buffer.
* Front buffers are often allocated on demand (other color buffers are
* always allocated in advance).
*/
if ((fb->_ColorReadBufferIndex == BUFFER_FRONT_LEFT ||
fb->_ColorReadBufferIndex == BUFFER_FRONT_RIGHT) &&
fb->Attachment[fb->_ColorReadBufferIndex].Type == GL_NONE) {
/* add the buffer */
st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex);
st_validate_state(st, ST_PIPELINE_RENDER);
}
}
/**
* Called via ctx->Driver.Clear()
* XXX: doesn't pick up the differences between front/back/left/right
* clears. Need to sort that out...
*/
static void st_clear(GLcontext *ctx, GLbitfield mask)
{
static const GLbitfield BUFFER_BITS_DS
= (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
struct st_context *st = ctx->st;
struct gl_renderbuffer *depthRb
= ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
struct gl_renderbuffer *stencilRb
= ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
GLbitfield quad_buffers = 0;
GLbitfield clear_buffers = 0;
GLuint i;
/* This makes sure the pipe has the latest scissor, etc values */
st_validate_state( st );
if (mask & BUFFER_BITS_COLOR) {
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
GLuint b = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
if (mask & (1 << b)) {
struct gl_renderbuffer *rb
= ctx->DrawBuffer->Attachment[b].Renderbuffer;
struct st_renderbuffer *strb;
assert(rb);
strb = st_renderbuffer(rb);
if (!strb->surface)
continue;
if (check_clear_color_with_quad( ctx, rb ))
quad_buffers |= PIPE_CLEAR_COLOR;
else
clear_buffers |= PIPE_CLEAR_COLOR;
}
}
}
if ((mask & BUFFER_BITS_DS) == BUFFER_BITS_DS && depthRb == stencilRb) {
/* clearing combined depth + stencil */
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (strb->surface) {
if (check_clear_depth_stencil_with_quad(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
else
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
}
}
else {
/* separate depth/stencil clears */
if (mask & BUFFER_BIT_DEPTH) {
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (strb->surface) {
if (check_clear_depth_with_quad(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
else
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
}
}
if (mask & BUFFER_BIT_STENCIL) {
struct st_renderbuffer *strb = st_renderbuffer(stencilRb);
if (strb->surface) {
if (check_clear_stencil_with_quad(ctx, stencilRb))
quad_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
else
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
}
}
}
/*
* If we're going to use clear_with_quad() for any reason, use it for
* everything possible.
*/
if (quad_buffers) {
quad_buffers |= clear_buffers;
clear_with_quad(ctx,
quad_buffers & PIPE_CLEAR_COLOR,
mask & BUFFER_BIT_DEPTH,
mask & BUFFER_BIT_STENCIL);
} else if (clear_buffers)
ctx->st->pipe->clear(ctx->st->pipe, clear_buffers, ctx->Color.ClearColor,
ctx->Depth.Clear, ctx->Stencil.Clear);
if (mask & BUFFER_BIT_ACCUM)
st_clear_accum_buffer(ctx,
ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);
}
/**
* Called by VBO to draw arrays when in selection or feedback mode and
* to implement glRasterPos.
* This is very much like the normal draw_vbo() function above.
* Look at code refactoring some day.
*/
void
st_feedback_draw_vbo(struct gl_context *ctx,
const struct gl_client_array **arrays,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index,
struct gl_transform_feedback_object *tfb_vertcount)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct draw_context *draw = st->draw;
const struct st_vertex_program *vp;
const struct pipe_shader_state *vs;
struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
struct pipe_index_buffer ibuffer;
struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
struct pipe_transfer *ib_transfer = NULL;
GLuint attr, i;
const GLubyte *low_addr = NULL;
const void *mapped_indices = NULL;
assert(draw);
st_validate_state(st);
if (!index_bounds_valid)
vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims);
/* must get these after state validation! */
vp = st->vp;
vs = &st->vp_variant->tgsi;
if (!st->vp_variant->draw_shader) {
st->vp_variant->draw_shader = draw_create_vertex_shader(draw, vs);
}
/*
* Set up the draw module's state.
*
* We'd like to do this less frequently, but the normal state-update
* code sends state updates to the pipe, not to our private draw module.
*/
assert(draw);
draw_set_viewport_state(draw, &st->state.viewport);
draw_set_clip_state(draw, &st->state.clip);
draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL);
draw_bind_vertex_shader(draw, st->vp_variant->draw_shader);
set_feedback_vertex_format(ctx);
/* Find the lowest address of the arrays we're drawing */
if (vp->num_inputs) {
low_addr = arrays[vp->index_to_input[0]]->Ptr;
for (attr = 1; attr < vp->num_inputs; attr++) {
const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr;
low_addr = MIN2(low_addr, start);
}
}
/* loop over TGSI shader inputs to determine vertex buffer
* and attribute info
*/
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
void *map;
if (bufobj && bufobj->Name) {
/* Attribute data is in a VBO.
* Recall that for VBOs, the gl_client_array->Ptr field is
* really an offset from the start of the VBO, not a pointer.
*/
struct st_buffer_object *stobj = st_buffer_object(bufobj);
assert(stobj->buffer);
vbuffers[attr].buffer = NULL;
pipe_resource_reference(&vbuffers[attr].buffer, stobj->buffer);
vbuffers[attr].buffer_offset = pointer_to_offset(low_addr);
velements[attr].src_offset = arrays[mesaAttr]->Ptr - low_addr;
}
else {
/* attribute data is in user-space memory, not a VBO */
uint bytes = (arrays[mesaAttr]->Size
* _mesa_sizeof_type(arrays[mesaAttr]->Type)
* (max_index + 1));
/* wrap user data */
vbuffers[attr].buffer
= pipe_user_buffer_create(pipe->screen, (void *) arrays[mesaAttr]->Ptr,
bytes,
PIPE_BIND_VERTEX_BUFFER);
vbuffers[attr].buffer_offset = 0;
velements[attr].src_offset = 0;
}
/* common-case setup */
vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */
velements[attr].instance_divisor = 0;
velements[attr].vertex_buffer_index = attr;
velements[attr].src_format =
st_pipe_vertex_format(arrays[mesaAttr]->Type,
arrays[mesaAttr]->Size,
arrays[mesaAttr]->Format,
arrays[mesaAttr]->Normalized,
arrays[mesaAttr]->Integer);
assert(velements[attr].src_format);
/* tell draw about this attribute */
#if 0
draw_set_vertex_buffer(draw, attr, &vbuffer[attr]);
#endif
/* map the attrib buffer */
map = pipe_buffer_map(pipe, vbuffers[attr].buffer,
PIPE_TRANSFER_READ,
&vb_transfer[attr]);
draw_set_mapped_vertex_buffer(draw, attr, map);
}
draw_set_vertex_buffers(draw, vp->num_inputs, vbuffers);
draw_set_vertex_elements(draw, vp->num_inputs, velements);
memset(&ibuffer, 0, sizeof(ibuffer));
if (ib) {
struct gl_buffer_object *bufobj = ib->obj;
ibuffer.index_size = vbo_sizeof_ib_type(ib->type);
if (ibuffer.index_size == 0)
goto out_unref_vertex;
if (bufobj && bufobj->Name) {
struct st_buffer_object *stobj = st_buffer_object(bufobj);
pipe_resource_reference(&ibuffer.buffer, stobj->buffer);
ibuffer.offset = pointer_to_offset(ib->ptr);
mapped_indices = pipe_buffer_map(pipe, stobj->buffer,
PIPE_TRANSFER_READ, &ib_transfer);
}
else {
/* skip setting ibuffer.buffer as the draw module does not use it */
mapped_indices = ib->ptr;
}
draw_set_index_buffer(draw, &ibuffer);
draw_set_mapped_index_buffer(draw, mapped_indices);
}
/* set the constant buffer */
draw_set_mapped_constant_buffer(st->draw, PIPE_SHADER_VERTEX, 0,
st->state.constants[PIPE_SHADER_VERTEX].ptr,
st->state.constants[PIPE_SHADER_VERTEX].size);
/* draw here */
for (i = 0; i < nr_prims; i++) {
draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count);
}
/*
* unmap vertex/index buffers
*/
if (ib) {
draw_set_mapped_index_buffer(draw, NULL);
draw_set_index_buffer(draw, NULL);
if (ib_transfer)
pipe_buffer_unmap(pipe, ib_transfer);
pipe_resource_reference(&ibuffer.buffer, NULL);
}
out_unref_vertex:
for (attr = 0; attr < vp->num_inputs; attr++) {
pipe_buffer_unmap(pipe, vb_transfer[attr]);
draw_set_mapped_vertex_buffer(draw, attr, NULL);
pipe_resource_reference(&vbuffers[attr].buffer, NULL);
}
draw_set_vertex_buffers(draw, 0, NULL);
}
static void
st_DrawTex(struct gl_context *ctx, GLfloat x, GLfloat y, GLfloat z,
GLfloat width, GLfloat height)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct cso_context *cso = st->cso_context;
struct pipe_resource *vbuffer = NULL;
GLuint i, numTexCoords, numAttribs;
GLboolean emitColor;
uint semantic_names[2 + MAX_TEXTURE_UNITS];
uint semantic_indexes[2 + MAX_TEXTURE_UNITS];
struct pipe_vertex_element velements[2 + MAX_TEXTURE_UNITS];
unsigned offset;
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(st);
st_validate_state(st, ST_PIPELINE_RENDER);
/* determine if we need vertex color */
if (ctx->FragmentProgram._Current->info.inputs_read & VARYING_BIT_COL0)
emitColor = GL_TRUE;
else
emitColor = GL_FALSE;
/* determine how many enabled sets of texcoords */
numTexCoords = 0;
for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
if (ctx->Texture.Unit[i]._Current &&
ctx->Texture.Unit[i]._Current->Target == GL_TEXTURE_2D) {
numTexCoords++;
}
}
/* total number of attributes per vertex */
numAttribs = 1 + emitColor + numTexCoords;
/* load vertex buffer */
{
#define SET_ATTRIB(VERT, ATTR, X, Y, Z, W) \
do { \
GLuint k = (((VERT) * numAttribs + (ATTR)) * 4); \
assert(k < 4 * 4 * numAttribs); \
vbuf[k + 0] = X; \
vbuf[k + 1] = Y; \
vbuf[k + 2] = Z; \
vbuf[k + 3] = W; \
} while (0)
const GLfloat x0 = x, y0 = y, x1 = x + width, y1 = y + height;
GLfloat *vbuf = NULL;
GLuint tex_attr;
u_upload_alloc(pipe->stream_uploader, 0,
numAttribs * 4 * 4 * sizeof(GLfloat), 4,
&offset, &vbuffer, (void **) &vbuf);
if (!vbuffer) {
return;
}
z = CLAMP(z, 0.0f, 1.0f);
/* positions (in clip coords) */
{
const struct gl_framebuffer *fb = ctx->DrawBuffer;
const GLfloat fb_width = (GLfloat)_mesa_geometric_width(fb);
const GLfloat fb_height = (GLfloat)_mesa_geometric_height(fb);
const GLfloat clip_x0 = (GLfloat)(x0 / fb_width * 2.0 - 1.0);
const GLfloat clip_y0 = (GLfloat)(y0 / fb_height * 2.0 - 1.0);
const GLfloat clip_x1 = (GLfloat)(x1 / fb_width * 2.0 - 1.0);
const GLfloat clip_y1 = (GLfloat)(y1 / fb_height * 2.0 - 1.0);
SET_ATTRIB(0, 0, clip_x0, clip_y0, z, 1.0f); /* lower left */
SET_ATTRIB(1, 0, clip_x1, clip_y0, z, 1.0f); /* lower right */
SET_ATTRIB(2, 0, clip_x1, clip_y1, z, 1.0f); /* upper right */
SET_ATTRIB(3, 0, clip_x0, clip_y1, z, 1.0f); /* upper left */
semantic_names[0] = TGSI_SEMANTIC_POSITION;
semantic_indexes[0] = 0;
}
/* colors */
if (emitColor) {
const GLfloat *c = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
SET_ATTRIB(0, 1, c[0], c[1], c[2], c[3]);
SET_ATTRIB(1, 1, c[0], c[1], c[2], c[3]);
SET_ATTRIB(2, 1, c[0], c[1], c[2], c[3]);
SET_ATTRIB(3, 1, c[0], c[1], c[2], c[3]);
semantic_names[1] = TGSI_SEMANTIC_COLOR;
semantic_indexes[1] = 0;
tex_attr = 2;
}
else {
tex_attr = 1;
}
/* texcoords */
for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
if (ctx->Texture.Unit[i]._Current &&
ctx->Texture.Unit[i]._Current->Target == GL_TEXTURE_2D) {
struct gl_texture_object *obj = ctx->Texture.Unit[i]._Current;
const struct gl_texture_image *img = _mesa_base_tex_image(obj);
const GLfloat wt = (GLfloat) img->Width;
const GLfloat ht = (GLfloat) img->Height;
const GLfloat s0 = obj->CropRect[0] / wt;
const GLfloat t0 = obj->CropRect[1] / ht;
const GLfloat s1 = (obj->CropRect[0] + obj->CropRect[2]) / wt;
const GLfloat t1 = (obj->CropRect[1] + obj->CropRect[3]) / ht;
/*printf("crop texcoords: %g, %g .. %g, %g\n", s0, t0, s1, t1);*/
SET_ATTRIB(0, tex_attr, s0, t0, 0.0f, 1.0f); /* lower left */
SET_ATTRIB(1, tex_attr, s1, t0, 0.0f, 1.0f); /* lower right */
SET_ATTRIB(2, tex_attr, s1, t1, 0.0f, 1.0f); /* upper right */
SET_ATTRIB(3, tex_attr, s0, t1, 0.0f, 1.0f); /* upper left */
semantic_names[tex_attr] = st->needs_texcoord_semantic ?
TGSI_SEMANTIC_TEXCOORD : TGSI_SEMANTIC_GENERIC;
/* XXX: should this use semantic index i instead of 0 ? */
semantic_indexes[tex_attr] = 0;
tex_attr++;
}
}
u_upload_unmap(pipe->stream_uploader);
#undef SET_ATTRIB
}
cso_save_state(cso, (CSO_BIT_VIEWPORT |
CSO_BIT_STREAM_OUTPUTS |
CSO_BIT_VERTEX_SHADER |
CSO_BIT_TESSCTRL_SHADER |
CSO_BIT_TESSEVAL_SHADER |
CSO_BIT_GEOMETRY_SHADER |
CSO_BIT_VERTEX_ELEMENTS |
CSO_BIT_AUX_VERTEX_BUFFER_SLOT));
{
void *vs = lookup_shader(pipe, numAttribs,
semantic_names, semantic_indexes);
cso_set_vertex_shader_handle(cso, vs);
}
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
cso_set_geometry_shader_handle(cso, NULL);
for (i = 0; i < numAttribs; i++) {
velements[i].src_offset = i * 4 * sizeof(float);
velements[i].instance_divisor = 0;
velements[i].vertex_buffer_index = 0;
velements[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
}
cso_set_vertex_elements(cso, numAttribs, velements);
cso_set_stream_outputs(cso, 0, NULL, NULL);
/* viewport state: viewport matching window dims */
{
const struct gl_framebuffer *fb = ctx->DrawBuffer;
const GLboolean invert = (st_fb_orientation(fb) == Y_0_TOP);
const GLfloat width = (GLfloat)_mesa_geometric_width(fb);
const GLfloat height = (GLfloat)_mesa_geometric_height(fb);
struct pipe_viewport_state vp;
vp.scale[0] = 0.5f * width;
vp.scale[1] = height * (invert ? -0.5f : 0.5f);
vp.scale[2] = 1.0f;
vp.translate[0] = 0.5f * width;
vp.translate[1] = 0.5f * height;
vp.translate[2] = 0.0f;
cso_set_viewport(cso, &vp);
}
util_draw_vertex_buffer(pipe, cso, vbuffer,
cso_get_aux_vertex_buffer_slot(cso),
offset, /* offset */
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
numAttribs); /* attribs/vert */
pipe_resource_reference(&vbuffer, NULL);
/* restore state */
cso_restore_state(cso);
}
/**
* This function gets plugged into the VBO module and is called when
* we have something to render.
* Basically, translate the information into the format expected by gallium.
*/
void
st_draw_vbo(struct gl_context *ctx,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index,
struct gl_transform_feedback_object *tfb_vertcount)
{
struct st_context *st = st_context(ctx);
struct pipe_index_buffer ibuffer = {0};
struct pipe_draw_info info;
const struct gl_client_array **arrays = ctx->Array._DrawArrays;
unsigned i;
GLboolean new_array;
/* Mesa core state should have been validated already */
assert(ctx->NewState == 0x0);
/* Get Mesa driver state. */
st->dirty.st |= ctx->NewDriverState;
ctx->NewDriverState = 0;
new_array =
(st->dirty.st & (ST_NEW_VERTEX_ARRAYS | ST_NEW_VERTEX_PROGRAM)) ||
(st->dirty.mesa & (_NEW_PROGRAM | _NEW_BUFFER_OBJECT)) != 0;
/* Validate state. */
if (st->dirty.st) {
GLboolean vertDataEdgeFlags;
vertDataEdgeFlags = arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj &&
arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj->Name;
if (vertDataEdgeFlags != st->vertdata_edgeflags) {
st->vertdata_edgeflags = vertDataEdgeFlags;
st->dirty.st |= ST_NEW_EDGEFLAGS_DATA;
}
st_validate_state(st);
if (new_array) {
if (!st_validate_varrays(ctx, arrays)) {
/* probably out of memory, no-op the draw call */
return;
}
}
#if 0
if (MESA_VERBOSE & VERBOSE_GLSL) {
check_uniforms(ctx);
}
#else
(void) check_uniforms;
#endif
}
util_draw_init_info(&info);
if (ib) {
/* Get index bounds for user buffers. */
if (!index_bounds_valid)
if (!all_varyings_in_vbos(arrays))
vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index,
nr_prims);
setup_index_buffer(st, ib, &ibuffer);
info.indexed = TRUE;
if (min_index != ~0 && max_index != ~0) {
info.min_index = min_index;
info.max_index = max_index;
}
/* The VBO module handles restart for the non-indexed GLDrawArrays
* so we only set these fields for indexed drawing:
*/
info.primitive_restart = ctx->Array.PrimitiveRestart;
info.restart_index = ctx->Array.RestartIndex;
}
else {
/* Transform feedback drawing is always non-indexed. */
/* Set info.count_from_stream_output. */
if (tfb_vertcount) {
st_transform_feedback_draw_init(tfb_vertcount, &info);
}
}
/* do actual drawing */
for (i = 0; i < nr_prims; i++) {
info.mode = translate_prim( ctx, prims[i].mode );
info.start = prims[i].start;
info.count = prims[i].count;
info.instance_count = prims[i].num_instances;
info.index_bias = prims[i].basevertex;
if (!ib) {
info.min_index = info.start;
info.max_index = info.start + info.count - 1;
}
if (info.count_from_stream_output) {
cso_draw_vbo(st->cso_context, &info);
}
else if (info.primitive_restart) {
/* don't trim, restarts might be inside index list */
cso_draw_vbo(st->cso_context, &info);
}
else if (u_trim_pipe_prim(info.mode, &info.count))
cso_draw_vbo(st->cso_context, &info);
}
if (ib && st->indexbuf_uploader && !_mesa_is_bufferobj(ib->obj)) {
pipe_resource_reference(&ibuffer.buffer, NULL);
}
}
/**
* Do a CopyTex[Sub]Image1/2/3D() using a hardware (blit) path if possible.
* Note that the region to copy has already been clipped so we know we
* won't read from outside the source renderbuffer's bounds.
*
* Note: srcY=0=Bottom of renderbuffer (GL convention)
*/
static void
st_CopyTexSubImage(struct gl_context *ctx, GLuint dims,
struct gl_texture_image *texImage,
GLint destX, GLint destY, GLint destZ,
struct gl_renderbuffer *rb,
GLint srcX, GLint srcY, GLsizei width, GLsizei height)
{
struct st_texture_image *stImage = st_texture_image(texImage);
const GLenum texBaseFormat = texImage->_BaseFormat;
struct st_renderbuffer *strb = st_renderbuffer(rb);
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
enum pipe_format dest_format, src_format;
GLboolean matching_base_formats;
GLuint color_writemask, zs_writemask, sample_count;
struct pipe_surface *dest_surface = NULL;
GLboolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
struct pipe_surface surf_tmpl;
unsigned int dst_usage;
GLint srcY0, srcY1;
/* make sure finalize_textures has been called?
*/
if (0) st_validate_state(st);
if (!strb || !strb->surface || !stImage->pt) {
debug_printf("%s: null strb or stImage\n", __FUNCTION__);
return;
}
sample_count = strb->surface->texture->nr_samples;
/* I believe this would be legal, presumably would need to do a resolve
for color, and for depth/stencil spec says to just use one of the
depth/stencil samples per pixel? Need some transfer clarifications. */
assert(sample_count < 2);
assert(strb);
assert(strb->surface);
assert(stImage->pt);
src_format = strb->surface->format;
dest_format = stImage->pt->format;
/*
* Determine if the src framebuffer and dest texture have the same
* base format. We need this to detect a case such as the framebuffer
* being GL_RGBA but the texture being GL_RGB. If the actual hardware
* texture format stores RGBA we need to set A=1 (overriding the
* framebuffer's alpha values). We can't do that with the blit or
* textured-quad paths.
*/
matching_base_formats =
(_mesa_get_format_base_format(strb->Base.Format) ==
_mesa_get_format_base_format(texImage->TexFormat));
if (ctx->_ImageTransferState) {
goto fallback;
}
if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) {
/* 1D arrays might be thought of as 2D images but the actual layout
* might not be that way. At some points, we convert OpenGL's 1D
* array 'height' into gallium 'layers' and that prevents the blit
* utility code from doing the right thing. Simpy use the memcpy-based
* fallback.
*/
goto fallback;
}
if (matching_base_formats &&
src_format == dest_format &&
!do_flip) {
/* use surface_copy() / blit */
struct pipe_box src_box;
unsigned dstLevel;
u_box_2d_zslice(srcX, srcY, strb->surface->u.tex.first_layer,
width, height, &src_box);
/* If stImage->pt is an independent image (not a pointer into a full
* mipmap) stImage->pt.last_level will be zero and we need to use that
* as the dest level.
*/
dstLevel = MIN2(stImage->base.Level, stImage->pt->last_level);
/* for resource_copy_region(), y=0=top, always */
pipe->resource_copy_region(pipe,
/* dest */
stImage->pt,
dstLevel,
destX, destY, destZ + stImage->base.Face,
/* src */
strb->texture,
strb->surface->u.tex.level,
&src_box);
return;
}
if (texBaseFormat == GL_DEPTH_STENCIL) {
goto fallback;
}
if (texBaseFormat == GL_DEPTH_COMPONENT) {
color_writemask = 0;
zs_writemask = BLIT_WRITEMASK_Z;
dst_usage = PIPE_BIND_DEPTH_STENCIL;
}
else {
color_writemask = compatible_src_dst_formats(ctx, &strb->Base, texImage);
zs_writemask = 0;
dst_usage = PIPE_BIND_RENDER_TARGET;
}
if ((!color_writemask && !zs_writemask) ||
!screen->is_format_supported(screen, src_format,
PIPE_TEXTURE_2D, sample_count,
PIPE_BIND_SAMPLER_VIEW) ||
!screen->is_format_supported(screen, dest_format,
PIPE_TEXTURE_2D, 0,
dst_usage)) {
goto fallback;
}
if (do_flip) {
srcY1 = strb->Base.Height - srcY - height;
srcY0 = srcY1 + height;
}
else {
srcY0 = srcY;
srcY1 = srcY0 + height;
}
/* Disable conditional rendering. */
if (st->render_condition) {
pipe->render_condition(pipe, NULL, 0);
}
memset(&surf_tmpl, 0, sizeof(surf_tmpl));
surf_tmpl.format = util_format_linear(stImage->pt->format);
surf_tmpl.usage = dst_usage;
surf_tmpl.u.tex.level = stImage->base.Level;
surf_tmpl.u.tex.first_layer = stImage->base.Face + destZ;
surf_tmpl.u.tex.last_layer = stImage->base.Face + destZ;
dest_surface = pipe->create_surface(pipe, stImage->pt,
&surf_tmpl);
util_blit_pixels(st->blit,
strb->texture,
strb->surface->u.tex.level,
srcX, srcY0,
srcX + width, srcY1,
strb->surface->u.tex.first_layer,
dest_surface,
destX, destY,
destX + width, destY + height,
0.0, PIPE_TEX_MIPFILTER_NEAREST,
color_writemask, zs_writemask);
pipe_surface_reference(&dest_surface, NULL);
/* Restore conditional rendering state. */
if (st->render_condition) {
pipe->render_condition(pipe, st->render_condition,
st->condition_mode);
}
return;
fallback:
/* software fallback */
fallback_copy_texsubimage(ctx,
strb, stImage, texBaseFormat,
destX, destY, destZ,
srcX, srcY, width, height);
}
static void
st_CopyPixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
struct st_renderbuffer *rbRead;
struct st_vertex_program *stvp;
struct st_fragment_program *stfp;
struct pipe_texture *pt;
GLfloat *color;
enum pipe_format srcFormat, texFormat;
pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
st_validate_state(st);
if (srcx < 0) {
width -= -srcx;
dstx += -srcx;
srcx = 0;
}
if (srcy < 0) {
height -= -srcy;
dsty += -srcy;
srcy = 0;
}
if (dstx < 0) {
width -= -dstx;
srcx += -dstx;
dstx = 0;
}
if (dsty < 0) {
height -= -dsty;
srcy += -dsty;
dsty = 0;
}
if (width < 0 || height < 0)
return;
if (type == GL_STENCIL) {
/* can't use texturing to do stencil */
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
return;
}
if (type == GL_COLOR) {
rbRead = st_get_color_read_renderbuffer(ctx);
color = NULL;
stfp = combined_drawpix_fragment_program(ctx);
stvp = st_make_passthrough_vertex_shader(ctx->st, GL_FALSE);
}
else {
assert(type == GL_DEPTH);
rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
stfp = make_fragment_shader_z(ctx->st);
stvp = st_make_passthrough_vertex_shader(ctx->st, GL_TRUE);
}
srcFormat = rbRead->texture->format;
if (screen->is_format_supported(screen, srcFormat, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
texFormat = srcFormat;
}
else {
/* srcFormat can't be used as a texture format */
if (type == GL_DEPTH) {
texFormat = st_choose_format(pipe, GL_DEPTH_COMPONENT, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_DEPTH_STENCIL);
assert(texFormat != PIPE_FORMAT_NONE); /* XXX no depth texture formats??? */
}
else {
/* default color format */
texFormat = st_choose_format(pipe, GL_RGBA, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_SAMPLER);
assert(texFormat != PIPE_FORMAT_NONE);
}
}
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
srcy = ctx->DrawBuffer->Height - srcy - height;
if (srcy < 0) {
height -= -srcy;
srcy = 0;
}
if (height < 0)
return;
}
pt = st_texture_create(ctx->st, PIPE_TEXTURE_2D, texFormat, 0,
width, height, 1,
PIPE_TEXTURE_USAGE_SAMPLER);
if (!pt)
return;
if (srcFormat == texFormat) {
/* copy source framebuffer surface into mipmap/texture */
struct pipe_surface *psRead = screen->get_tex_surface(screen,
rbRead->texture, 0, 0, 0,
PIPE_BUFFER_USAGE_GPU_READ);
struct pipe_surface *psTex = screen->get_tex_surface(screen, pt, 0, 0, 0,
PIPE_BUFFER_USAGE_GPU_WRITE );
pipe->surface_copy(pipe,
psTex, /* dest */
0, 0, /* destx/y */
psRead,
srcx, srcy, width, height);
pipe_surface_reference(&psRead, NULL);
pipe_surface_reference(&psTex, NULL);
}
else {
/* CPU-based fallback/conversion */
struct pipe_transfer *ptRead =
st_cond_flush_get_tex_transfer(st, rbRead->texture, 0, 0, 0,
PIPE_TRANSFER_READ, srcx, srcy, width,
height);
struct pipe_transfer *ptTex;
enum pipe_transfer_usage transfer_usage;
if (type == GL_DEPTH && pf_is_depth_and_stencil(pt->format))
transfer_usage = PIPE_TRANSFER_READ_WRITE;
else
transfer_usage = PIPE_TRANSFER_WRITE;
ptTex = st_cond_flush_get_tex_transfer(st, pt, 0, 0, 0, transfer_usage,
0, 0, width, height);
if (type == GL_COLOR) {
/* alternate path using get/put_tile() */
GLfloat *buf = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
pipe_get_tile_rgba(ptRead, 0, 0, width, height, buf);
pipe_put_tile_rgba(ptTex, 0, 0, width, height, buf);
_mesa_free(buf);
}
else {
/* GL_DEPTH */
GLuint *buf = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint));
pipe_get_tile_z(ptRead, 0, 0, width, height, buf);
pipe_put_tile_z(ptTex, 0, 0, width, height, buf);
_mesa_free(buf);
}
screen->tex_transfer_destroy(ptRead);
screen->tex_transfer_destroy(ptTex);
}
/* draw textured quad */
draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],
width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
pt, stvp, stfp, color, GL_TRUE);
pipe_texture_reference(&pt, NULL);
}
static void
st_BlitFramebuffer(struct gl_context *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
struct st_context *st = st_context(ctx);
const uint pFilter = ((filter == GL_NEAREST)
? PIPE_TEX_MIPFILTER_NEAREST
: PIPE_TEX_MIPFILTER_LINEAR);
struct gl_framebuffer *readFB = ctx->ReadBuffer;
struct gl_framebuffer *drawFB = ctx->DrawBuffer;
st_validate_state(st);
if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1,
&dstX0, &dstY0, &dstX1, &dstY1)) {
return; /* nothing to draw/blit */
}
if (st_fb_orientation(drawFB) == Y_0_TOP) {
/* invert Y for dest */
dstY0 = drawFB->Height - dstY0;
dstY1 = drawFB->Height - dstY1;
}
if (st_fb_orientation(readFB) == Y_0_TOP) {
/* invert Y for src */
srcY0 = readFB->Height - srcY0;
srcY1 = readFB->Height - srcY1;
}
/* Disable conditional rendering. */
if (st->render_condition) {
st->pipe->render_condition(st->pipe, NULL, 0);
}
if (readFB->Visual.sampleBuffers > drawFB->Visual.sampleBuffers &&
readFB->Visual.samples > 1) {
struct pipe_resolve_info info;
if (dstX0 < dstX1) {
info.dst.x0 = dstX0;
info.dst.x1 = dstX1;
info.src.x0 = srcX0;
info.src.x1 = srcX1;
} else {
info.dst.x0 = dstX1;
info.dst.x1 = dstX0;
info.src.x0 = srcX1;
info.src.x1 = srcX0;
}
if (dstY0 < dstY1) {
info.dst.y0 = dstY0;
info.dst.y1 = dstY1;
info.src.y0 = srcY0;
info.src.y1 = srcY1;
} else {
info.dst.y0 = dstY1;
info.dst.y1 = dstY0;
info.src.y0 = srcY1;
info.src.y1 = srcY0;
}
st_BlitFramebuffer_resolve(ctx, mask, &info); /* filter doesn't apply */
goto done;
}
if (srcY0 > srcY1 && dstY0 > dstY1) {
/* Both src and dst are upside down. Swap Y to make it
* right-side up to increase odds of using a fast path.
* Recall that all Gallium raster coords have Y=0=top.
*/
GLint tmp;
tmp = srcY0;
srcY0 = srcY1;
srcY1 = tmp;
tmp = dstY0;
dstY0 = dstY1;
dstY1 = tmp;
}
if (mask & GL_COLOR_BUFFER_BIT) {
struct gl_renderbuffer_attachment *srcAtt =
&readFB->Attachment[readFB->_ColorReadBufferIndex];
if(srcAtt->Type == GL_TEXTURE) {
struct st_texture_object *srcObj =
st_texture_object(srcAtt->Texture);
struct st_renderbuffer *dstRb =
st_renderbuffer(drawFB->_ColorDrawBuffers[0]);
struct pipe_surface *dstSurf = dstRb->surface;
if (!srcObj->pt)
goto done;
util_blit_pixels(st->blit, srcObj->pt, srcAtt->TextureLevel,
srcX0, srcY0, srcX1, srcY1,
srcAtt->Zoffset + srcAtt->CubeMapFace,
dstSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter, TGSI_WRITEMASK_XYZW, 0);
}
else {
struct st_renderbuffer *srcRb =
st_renderbuffer(readFB->_ColorReadBuffer);
struct st_renderbuffer *dstRb =
st_renderbuffer(drawFB->_ColorDrawBuffers[0]);
struct pipe_surface *srcSurf = srcRb->surface;
struct pipe_surface *dstSurf = dstRb->surface;
util_blit_pixels(st->blit,
srcRb->texture, srcSurf->u.tex.level,
srcX0, srcY0, srcX1, srcY1,
srcSurf->u.tex.first_layer,
dstSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter, TGSI_WRITEMASK_XYZW, 0);
}
}
if (mask & depthStencil) {
/* depth and/or stencil blit */
/* get src/dst depth surfaces */
struct gl_renderbuffer_attachment *srcDepth =
&readFB->Attachment[BUFFER_DEPTH];
struct gl_renderbuffer_attachment *dstDepth =
&drawFB->Attachment[BUFFER_DEPTH];
struct gl_renderbuffer_attachment *srcStencil =
&readFB->Attachment[BUFFER_STENCIL];
struct gl_renderbuffer_attachment *dstStencil =
&drawFB->Attachment[BUFFER_STENCIL];
struct st_renderbuffer *srcDepthRb =
st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer);
struct st_renderbuffer *dstDepthRb =
st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer);
struct pipe_surface *dstDepthSurf =
dstDepthRb ? dstDepthRb->surface : NULL;
struct st_renderbuffer *srcStencilRb =
st_renderbuffer(readFB->Attachment[BUFFER_STENCIL].Renderbuffer);
struct st_renderbuffer *dstStencilRb =
st_renderbuffer(drawFB->Attachment[BUFFER_STENCIL].Renderbuffer);
struct pipe_surface *dstStencilSurf =
dstStencilRb ? dstStencilRb->surface : NULL;
if ((mask & depthStencil) == depthStencil &&
st_is_depth_stencil_combined(srcDepth, srcStencil) &&
st_is_depth_stencil_combined(dstDepth, dstStencil)) {
/* Blitting depth and stencil values between combined
* depth/stencil buffers. This is the ideal case for such buffers.
*/
util_blit_pixels(st->blit,
srcDepthRb->texture,
srcDepthRb->surface->u.tex.level,
srcX0, srcY0, srcX1, srcY1,
srcDepthRb->surface->u.tex.first_layer,
dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter, 0,
BLIT_WRITEMASK_Z |
(st->has_stencil_export ? BLIT_WRITEMASK_STENCIL
: 0));
if (!st->has_stencil_export) {
_mesa_problem(ctx, "st_BlitFramebuffer(STENCIL) "
"software fallback not implemented");
}
}
else {
/* blitting depth and stencil separately */
if (mask & GL_DEPTH_BUFFER_BIT) {
util_blit_pixels(st->blit, srcDepthRb->texture,
srcDepthRb->surface->u.tex.level,
srcX0, srcY0, srcX1, srcY1,
srcDepthRb->surface->u.tex.first_layer,
dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter, 0, BLIT_WRITEMASK_Z);
}
if (mask & GL_STENCIL_BUFFER_BIT) {
if (st->has_stencil_export) {
util_blit_pixels(st->blit, srcStencilRb->texture,
srcStencilRb->surface->u.tex.level,
srcX0, srcY0, srcX1, srcY1,
srcStencilRb->surface->u.tex.first_layer,
dstStencilSurf, dstX0, dstY0, dstX1, dstY1,
0.0, pFilter, 0, BLIT_WRITEMASK_STENCIL);
}
else {
_mesa_problem(ctx, "st_BlitFramebuffer(STENCIL) "
"software fallback not implemented");
}
}
}
}
done:
/* Restore conditional rendering state. */
if (st->render_condition) {
st->pipe->render_condition(st->pipe, st->render_condition,
st->condition_mode);
}
}
/**
* Called via ctx->Driver.DrawAtlasBitmap()
*/
static void
st_DrawAtlasBitmaps(struct gl_context *ctx,
const struct gl_bitmap_atlas *atlas,
GLuint count, const GLubyte *ids)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_texture_object *stObj = st_texture_object(atlas->texObj);
struct pipe_sampler_view *sv;
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
const float z = ctx->Current.RasterPos[2] * 2.0f - 1.0f;
const float *color = ctx->Current.RasterColor;
const float clip_x_scale = 2.0f / st->state.framebuffer.width;
const float clip_y_scale = 2.0f / st->state.framebuffer.height;
const unsigned num_verts = count * 4;
const unsigned num_vert_bytes = num_verts * sizeof(struct st_util_vertex);
struct st_util_vertex *verts;
struct pipe_vertex_buffer vb = {0};
unsigned i;
if (!st->bitmap.cache) {
init_bitmap_state(st);
}
st_flush_bitmap_cache(st);
st_validate_state(st, ST_PIPELINE_RENDER);
st_invalidate_readpix_cache(st);
sv = st_create_texture_sampler_view(pipe, stObj->pt);
if (!sv) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCallLists(bitmap text)");
return;
}
setup_render_state(ctx, sv, color, true);
vb.stride = sizeof(struct st_util_vertex);
u_upload_alloc(st->uploader, 0, num_vert_bytes, 4,
&vb.buffer_offset, &vb.buffer, (void **) &verts);
/* build quads vertex data */
for (i = 0; i < count; i++) {
const GLfloat epsilon = 0.0001F;
const struct gl_bitmap_glyph *g = &atlas->glyphs[ids[i]];
const float xmove = g->xmove, ymove = g->ymove;
const float xorig = g->xorig, yorig = g->yorig;
const float s0 = g->x, t0 = g->y;
const float s1 = s0 + g->w, t1 = t0 + g->h;
const float x0 = IFLOOR(ctx->Current.RasterPos[0] - xorig + epsilon);
const float y0 = IFLOOR(ctx->Current.RasterPos[1] - yorig + epsilon);
const float x1 = x0 + g->w, y1 = y0 + g->h;
const float clip_x0 = x0 * clip_x_scale - 1.0f;
const float clip_y0 = y0 * clip_y_scale - 1.0f;
const float clip_x1 = x1 * clip_x_scale - 1.0f;
const float clip_y1 = y1 * clip_y_scale - 1.0f;
/* lower-left corner */
verts->x = clip_x0;
verts->y = clip_y0;
verts->z = z;
verts->r = color[0];
verts->g = color[1];
verts->b = color[2];
verts->a = color[3];
verts->s = s0;
verts->t = t0;
verts++;
/* lower-right corner */
verts->x = clip_x1;
verts->y = clip_y0;
verts->z = z;
verts->r = color[0];
verts->g = color[1];
verts->b = color[2];
verts->a = color[3];
verts->s = s1;
verts->t = t0;
verts++;
/* upper-right corner */
verts->x = clip_x1;
verts->y = clip_y1;
verts->z = z;
verts->r = color[0];
verts->g = color[1];
verts->b = color[2];
verts->a = color[3];
verts->s = s1;
verts->t = t1;
verts++;
/* upper-left corner */
verts->x = clip_x0;
verts->y = clip_y1;
verts->z = z;
verts->r = color[0];
verts->g = color[1];
verts->b = color[2];
verts->a = color[3];
verts->s = s0;
verts->t = t1;
verts++;
/* Update the raster position */
ctx->Current.RasterPos[0] += xmove;
ctx->Current.RasterPos[1] += ymove;
}
u_upload_unmap(st->uploader);
cso_set_vertex_buffers(st->cso_context,
cso_get_aux_vertex_buffer_slot(st->cso_context),
1, &vb);
cso_draw_arrays(st->cso_context, PIPE_PRIM_QUADS, 0, num_verts);
restore_render_state(ctx);
pipe_resource_reference(&vb.buffer, NULL);
pipe_sampler_view_reference(&sv, NULL);
/* We uploaded modified constants, need to invalidate them. */
st->dirty |= ST_NEW_FS_CONSTANTS;
}
static void
st_RasterPos(struct gl_context *ctx, const GLfloat v[4])
{
struct st_context *st = st_context(ctx);
struct draw_context *draw = st_get_draw_context(st);
struct rastpos_stage *rs;
const struct gl_vertex_array **saved_arrays = ctx->Array._DrawArrays;
if (!st->draw)
return;
if (ctx->VertexProgram._Current == NULL ||
ctx->VertexProgram._Current == ctx->VertexProgram._TnlProgram) {
/* No vertex shader/program is enabled, used the simple/fast fixed-
* function implementation of RasterPos.
*/
_mesa_RasterPos(ctx, v);
return;
}
if (st->rastpos_stage) {
/* get rastpos stage info */
rs = rastpos_stage(st->rastpos_stage);
}
else {
/* create rastpos draw stage */
rs = new_draw_rastpos_stage(ctx, draw);
st->rastpos_stage = &rs->stage;
}
/* plug our rastpos stage into the draw module */
draw_set_rasterize_stage(st->draw, st->rastpos_stage);
/* make sure everything's up to date */
st_validate_state(st, ST_PIPELINE_RENDER);
/* This will get set only if rastpos_point(), above, gets called */
ctx->Current.RasterPosValid = GL_FALSE;
/* All vertex attribs but position were previously initialized above.
* Just plug in position pointer now.
*/
rs->array[0].Ptr = (GLubyte *) v;
/* Draw the point.
*
* Don't set DriverFlags.NewArray.
* st_feedback_draw_vbo doesn't check for that flag. */
ctx->Array._DrawArrays = rs->arrays;
st_feedback_draw_vbo(ctx, &rs->prim, 1, NULL, GL_TRUE, 0, 1,
NULL, 0, NULL);
ctx->Array._DrawArrays = saved_arrays;
/* restore draw's rasterization stage depending on rendermode */
if (ctx->RenderMode == GL_FEEDBACK) {
draw_set_rasterize_stage(draw, st->feedback_stage);
}
else if (ctx->RenderMode == GL_SELECT) {
draw_set_rasterize_stage(draw, st->selection_stage);
}
}
/**
* Called via ctx->Driver.DrawPixels()
*/
static void
st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
{
void *driver_vp, *driver_fp;
struct st_context *st = st_context(ctx);
const GLfloat *color;
struct pipe_context *pipe = st->pipe;
GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE;
struct pipe_sampler_view *sv[2];
int num_sampler_view = 1;
enum pipe_format stencil_format = PIPE_FORMAT_NONE;
struct st_fp_variant *fpv;
if (format == GL_DEPTH_STENCIL)
write_stencil = write_depth = GL_TRUE;
else if (format == GL_STENCIL_INDEX)
write_stencil = GL_TRUE;
else if (format == GL_DEPTH_COMPONENT)
write_depth = GL_TRUE;
if (write_stencil) {
enum pipe_format tex_format;
/* can we write to stencil if not fallback */
if (!pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT))
goto stencil_fallback;
tex_format = st_choose_format(st->pipe->screen, base_format(format),
GL_NONE, GL_NONE,
PIPE_TEXTURE_2D,
0, PIPE_BIND_SAMPLER_VIEW);
if (tex_format == PIPE_FORMAT_Z24_UNORM_S8_USCALED)
stencil_format = PIPE_FORMAT_X24S8_USCALED;
else if (tex_format == PIPE_FORMAT_S8_USCALED_Z24_UNORM)
stencil_format = PIPE_FORMAT_S8X24_USCALED;
else
stencil_format = PIPE_FORMAT_S8_USCALED;
if (stencil_format == PIPE_FORMAT_NONE)
goto stencil_fallback;
}
/* Mesa state should be up to date by now */
assert(ctx->NewState == 0x0);
st_validate_state(st);
/*
* Get vertex/fragment shaders
*/
if (write_depth || write_stencil) {
fpv = get_depth_stencil_fp_variant(st, write_depth, write_stencil);
driver_fp = fpv->driver_shader;
driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
color = ctx->Current.RasterColor;
}
else {
fpv = get_color_fp_variant(st);
driver_fp = fpv->driver_shader;
driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
color = NULL;
if (st->pixel_xfer.pixelmap_enabled) {
sv[1] = st->pixel_xfer.pixelmap_sampler_view;
num_sampler_view++;
}
}
/* update fragment program constants */
st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
/* draw with textured quad */
{
struct pipe_resource *pt
= make_texture(st, width, height, format, type, unpack, pixels);
if (pt) {
sv[0] = st_create_texture_sampler_view(st->pipe, pt);
if (sv[0]) {
if (write_stencil) {
sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,
stencil_format);
num_sampler_view++;
}
draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
width, height,
ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
sv,
num_sampler_view,
driver_vp,
driver_fp,
color, GL_FALSE, write_depth, write_stencil);
pipe_sampler_view_reference(&sv[0], NULL);
if (num_sampler_view > 1)
pipe_sampler_view_reference(&sv[1], NULL);
}
pipe_resource_reference(&pt, NULL);
}
}
return;
stencil_fallback:
draw_stencil_pixels(ctx, x, y, width, height, format, type,
unpack, pixels);
}
static void
st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
struct st_renderbuffer *rbRead;
void *driver_vp, *driver_fp;
struct pipe_resource *pt;
struct pipe_sampler_view *sv[2];
int num_sampler_view = 1;
GLfloat *color;
enum pipe_format srcFormat, texFormat;
GLboolean invertTex = GL_FALSE;
GLint readX, readY, readW, readH;
GLuint sample_count;
struct gl_pixelstore_attrib pack = ctx->DefaultPacking;
struct st_fp_variant *fpv;
st_validate_state(st);
if (type == GL_STENCIL) {
/* can't use texturing to do stencil */
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
return;
}
if (blit_copy_pixels(ctx, srcx, srcy, width, height, dstx, dsty, type))
return;
/*
* The subsequent code implements glCopyPixels by copying the source
* pixels into a temporary texture that's then applied to a textured quad.
* When we draw the textured quad, all the usual per-fragment operations
* are handled.
*/
/*
* Get vertex/fragment shaders
*/
if (type == GL_COLOR) {
rbRead = st_get_color_read_renderbuffer(ctx);
color = NULL;
fpv = get_color_fp_variant(st);
driver_fp = fpv->driver_shader;
driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
if (st->pixel_xfer.pixelmap_enabled) {
sv[1] = st->pixel_xfer.pixelmap_sampler_view;
num_sampler_view++;
}
}
else {
assert(type == GL_DEPTH);
rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
fpv = get_depth_stencil_fp_variant(st, GL_TRUE, GL_FALSE);
driver_fp = fpv->driver_shader;
driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
}
/* update fragment program constants */
st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
if (rbRead->Base.Wrapped)
rbRead = st_renderbuffer(rbRead->Base.Wrapped);
sample_count = rbRead->texture->nr_samples;
/* I believe this would be legal, presumably would need to do a resolve
for color, and for depth/stencil spec says to just use one of the
depth/stencil samples per pixel? Need some transfer clarifications. */
assert(sample_count < 2);
srcFormat = rbRead->texture->format;
if (screen->is_format_supported(screen, srcFormat, st->internal_target,
sample_count,
PIPE_BIND_SAMPLER_VIEW)) {
texFormat = srcFormat;
}
else {
/* srcFormat can't be used as a texture format */
if (type == GL_DEPTH) {
texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT,
GL_NONE, GL_NONE, st->internal_target,
sample_count, PIPE_BIND_DEPTH_STENCIL);
assert(texFormat != PIPE_FORMAT_NONE);
}
else {
/* default color format */
texFormat = st_choose_format(screen, GL_RGBA,
GL_NONE, GL_NONE, st->internal_target,
sample_count, PIPE_BIND_SAMPLER_VIEW);
assert(texFormat != PIPE_FORMAT_NONE);
}
}
/* Invert src region if needed */
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
srcy = ctx->ReadBuffer->Height - srcy - height;
invertTex = !invertTex;
}
/* Clip the read region against the src buffer bounds.
* We'll still allocate a temporary buffer/texture for the original
* src region size but we'll only read the region which is on-screen.
* This may mean that we draw garbage pixels into the dest region, but
* that's expected.
*/
readX = srcx;
readY = srcy;
readW = width;
readH = height;
_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack);
readW = MAX2(0, readW);
readH = MAX2(0, readH);
/* alloc temporary texture */
pt = alloc_texture(st, width, height, texFormat);
if (!pt)
return;
sv[0] = st_create_texture_sampler_view(st->pipe, pt);
if (!sv[0]) {
pipe_resource_reference(&pt, NULL);
return;
}
/* Make temporary texture which is a copy of the src region.
*/
if (srcFormat == texFormat) {
struct pipe_box src_box;
u_box_2d(readX, readY, readW, readH, &src_box);
/* copy source framebuffer surface into mipmap/texture */
pipe->resource_copy_region(pipe,
pt, /* dest tex */
0, /* dest lvl */
pack.SkipPixels, pack.SkipRows, 0, /* dest pos */
rbRead->texture, /* src tex */
rbRead->rtt_level, /* src lvl */
&src_box);
}
else {
/* CPU-based fallback/conversion */
struct pipe_transfer *ptRead =
pipe_get_transfer(st->pipe, rbRead->texture,
rbRead->rtt_level,
rbRead->rtt_face + rbRead->rtt_slice,
PIPE_TRANSFER_READ,
readX, readY, readW, readH);
struct pipe_transfer *ptTex;
enum pipe_transfer_usage transfer_usage;
if (ST_DEBUG & DEBUG_FALLBACK)
debug_printf("%s: fallback processing\n", __FUNCTION__);
if (type == GL_DEPTH && util_format_is_depth_and_stencil(pt->format))
transfer_usage = PIPE_TRANSFER_READ_WRITE;
else
transfer_usage = PIPE_TRANSFER_WRITE;
ptTex = pipe_get_transfer(st->pipe, pt, 0, 0, transfer_usage,
0, 0, width, height);
/* copy image from ptRead surface to ptTex surface */
if (type == GL_COLOR) {
/* alternate path using get/put_tile() */
GLfloat *buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
enum pipe_format readFormat, drawFormat;
readFormat = util_format_linear(rbRead->texture->format);
drawFormat = util_format_linear(pt->format);
pipe_get_tile_rgba_format(pipe, ptRead, 0, 0, readW, readH,
readFormat, buf);
pipe_put_tile_rgba_format(pipe, ptTex, pack.SkipPixels, pack.SkipRows,
readW, readH, drawFormat, buf);
free(buf);
}
else {
/* GL_DEPTH */
GLuint *buf = (GLuint *) malloc(width * height * sizeof(GLuint));
pipe_get_tile_z(pipe, ptRead, 0, 0, readW, readH, buf);
pipe_put_tile_z(pipe, ptTex, pack.SkipPixels, pack.SkipRows,
readW, readH, buf);
free(buf);
}
pipe->transfer_destroy(pipe, ptRead);
pipe->transfer_destroy(pipe, ptTex);
}
/* OK, the texture 'pt' contains the src image/pixels. Now draw a
* textured quad with that texture.
*/
draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],
width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
sv,
num_sampler_view,
driver_vp,
driver_fp,
color, invertTex, GL_FALSE, GL_FALSE);
pipe_resource_reference(&pt, NULL);
pipe_sampler_view_reference(&sv[0], NULL);
}
/**
* Called via ctx->Driver.Clear()
*/
static void
st_Clear(struct gl_context *ctx, GLbitfield mask)
{
static const GLbitfield BUFFER_BITS_DS
= (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
struct st_context *st = st_context(ctx);
struct gl_renderbuffer *depthRb
= ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
struct gl_renderbuffer *stencilRb
= ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
GLbitfield quad_buffers = 0x0;
GLbitfield clear_buffers = 0x0;
GLuint i;
/* This makes sure the pipe has the latest scissor, etc values */
st_validate_state( st );
if (mask & BUFFER_BITS_COLOR) {
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
GLuint b = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
if (mask & (1 << b)) {
struct gl_renderbuffer *rb
= ctx->DrawBuffer->Attachment[b].Renderbuffer;
struct st_renderbuffer *strb = st_renderbuffer(rb);
if (!strb || !strb->surface)
continue;
if (check_clear_color_with_quad( ctx, rb ))
quad_buffers |= PIPE_CLEAR_COLOR;
else
clear_buffers |= PIPE_CLEAR_COLOR;
}
}
}
if ((mask & BUFFER_BITS_DS) == BUFFER_BITS_DS && depthRb == stencilRb) {
/* clearing combined depth + stencil */
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (strb->surface) {
if (check_clear_depth_stencil_with_quad(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
else
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
}
}
else {
/* separate depth/stencil clears */
/* I don't think truly separate buffers are actually possible in gallium or hw? */
if (mask & BUFFER_BIT_DEPTH) {
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (strb->surface) {
if (check_clear_depth_with_quad(ctx, depthRb,
st->clear.enable_ds_separate))
quad_buffers |= PIPE_CLEAR_DEPTH;
else
clear_buffers |= PIPE_CLEAR_DEPTH;
}
}
if (mask & BUFFER_BIT_STENCIL) {
struct st_renderbuffer *strb = st_renderbuffer(stencilRb);
if (strb->surface) {
if (check_clear_stencil_with_quad(ctx, stencilRb,
st->clear.enable_ds_separate))
quad_buffers |= PIPE_CLEAR_STENCIL;
else
clear_buffers |= PIPE_CLEAR_STENCIL;
}
}
}
/*
* If we're going to use clear_with_quad() for any reason, use it for
* everything possible.
*/
if (quad_buffers) {
quad_buffers |= clear_buffers;
clear_with_quad(ctx,
quad_buffers & PIPE_CLEAR_COLOR,
quad_buffers & PIPE_CLEAR_DEPTH,
quad_buffers & PIPE_CLEAR_STENCIL);
} else if (clear_buffers) {
/* driver cannot know it can clear everything if the buffer
* is a combined depth/stencil buffer but this wasn't actually
* required from the visual. Hence fix this up to avoid potential
* read-modify-write in the driver.
*/
union pipe_color_union clearColor;
if ((clear_buffers & PIPE_CLEAR_DEPTHSTENCIL) &&
((clear_buffers & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
(depthRb == stencilRb) &&
(ctx->DrawBuffer->Visual.depthBits == 0 ||
ctx->DrawBuffer->Visual.stencilBits == 0))
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
if (ctx->DrawBuffer->_ColorDrawBuffers[0]) {
st_translate_color(ctx->Color.ClearColor.f,
ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
clearColor.f);
}
st->pipe->clear(st->pipe, clear_buffers, &clearColor,
ctx->Depth.Clear, ctx->Stencil.Clear);
}
if (mask & BUFFER_BIT_ACCUM)
_mesa_clear_accum_buffer(ctx);
}
/**
* Called by VBO to draw arrays when in selection or feedback mode and
* to implement glRasterPos.
* This is very much like the normal draw_vbo() function above.
* Look at code refactoring some day.
* Might move this into the failover module some day.
*/
void
st_feedback_draw_vbo(GLcontext *ctx,
const struct gl_client_array **arrays,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct draw_context *draw = st->draw;
const struct st_vertex_program *vp;
const struct pipe_shader_state *vs;
struct pipe_buffer *index_buffer_handle = 0;
struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
GLuint attr, i;
ubyte *mapped_constants;
assert(draw);
st_validate_state(ctx->st);
if (!index_bounds_valid)
vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index);
/* must get these after state validation! */
vp = ctx->st->vp;
vs = &st->vp->state;
if (!st->vp->draw_shader) {
st->vp->draw_shader = draw_create_vertex_shader(draw, vs);
}
/*
* Set up the draw module's state.
*
* We'd like to do this less frequently, but the normal state-update
* code sends state updates to the pipe, not to our private draw module.
*/
assert(draw);
draw_set_viewport_state(draw, &st->state.viewport);
draw_set_clip_state(draw, &st->state.clip);
draw_set_rasterizer_state(draw, &st->state.rasterizer);
draw_bind_vertex_shader(draw, st->vp->draw_shader);
set_feedback_vertex_format(ctx);
/* loop over TGSI shader inputs to determine vertex buffer
* and attribute info
*/
for (attr = 0; attr < vp->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
void *map;
if (bufobj && bufobj->Name) {
/* Attribute data is in a VBO.
* Recall that for VBOs, the gl_client_array->Ptr field is
* really an offset from the start of the VBO, not a pointer.
*/
struct st_buffer_object *stobj = st_buffer_object(bufobj);
assert(stobj->buffer);
vbuffers[attr].buffer = NULL;
pipe_buffer_reference(&vbuffers[attr].buffer, stobj->buffer);
vbuffers[attr].buffer_offset = pointer_to_offset(arrays[0]->Ptr);
velements[attr].src_offset = arrays[mesaAttr]->Ptr - arrays[0]->Ptr;
}
else {
/* attribute data is in user-space memory, not a VBO */
uint bytes = (arrays[mesaAttr]->Size
* _mesa_sizeof_type(arrays[mesaAttr]->Type)
* (max_index + 1));
/* wrap user data */
vbuffers[attr].buffer
= pipe_user_buffer_create(pipe->screen, (void *) arrays[mesaAttr]->Ptr,
bytes);
vbuffers[attr].buffer_offset = 0;
velements[attr].src_offset = 0;
}
/* common-case setup */
vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */
vbuffers[attr].max_index = max_index;
velements[attr].vertex_buffer_index = attr;
velements[attr].nr_components = arrays[mesaAttr]->Size;
velements[attr].src_format =
st_pipe_vertex_format(arrays[mesaAttr]->Type,
arrays[mesaAttr]->Size,
arrays[mesaAttr]->Format,
arrays[mesaAttr]->Normalized);
assert(velements[attr].src_format);
/* tell draw about this attribute */
#if 0
draw_set_vertex_buffer(draw, attr, &vbuffer[attr]);
#endif
/* map the attrib buffer */
map = pipe_buffer_map(pipe->screen, vbuffers[attr].buffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_vertex_buffer(draw, attr, map);
}
draw_set_vertex_buffers(draw, vp->num_inputs, vbuffers);
draw_set_vertex_elements(draw, vp->num_inputs, velements);
if (ib) {
struct gl_buffer_object *bufobj = ib->obj;
unsigned indexSize;
void *map;
switch (ib->type) {
case GL_UNSIGNED_INT:
indexSize = 4;
break;
case GL_UNSIGNED_SHORT:
indexSize = 2;
break;
default:
assert(0);
return;
}
if (bufobj && bufobj->Name) {
struct st_buffer_object *stobj = st_buffer_object(bufobj);
index_buffer_handle = stobj->buffer;
map = pipe_buffer_map(pipe->screen, index_buffer_handle,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_element_buffer(draw, indexSize, map);
}
else {
draw_set_mapped_element_buffer(draw, indexSize, (void *) ib->ptr);
}
}
else {
/* no index/element buffer */
draw_set_mapped_element_buffer(draw, 0, NULL);
}
/* map constant buffers */
mapped_constants = pipe_buffer_map(pipe->screen,
st->state.constants[PIPE_SHADER_VERTEX].buffer,
PIPE_BUFFER_USAGE_CPU_READ);
draw_set_mapped_constant_buffer(st->draw, mapped_constants,
st->state.constants[PIPE_SHADER_VERTEX].buffer->size);
/* draw here */
for (i = 0; i < nr_prims; i++) {
draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count);
}
/* unmap constant buffers */
pipe_buffer_unmap(pipe->screen, st->state.constants[PIPE_SHADER_VERTEX].buffer);
/*
* unmap vertex/index buffers
*/
for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
if (draw->pt.vertex_buffer[i].buffer) {
pipe_buffer_unmap(pipe->screen, draw->pt.vertex_buffer[i].buffer);
pipe_buffer_reference(&draw->pt.vertex_buffer[i].buffer, NULL);
draw_set_mapped_vertex_buffer(draw, i, NULL);
}
}
if (index_buffer_handle) {
pipe_buffer_unmap(pipe->screen, index_buffer_handle);
draw_set_mapped_element_buffer(draw, 0, NULL);
}
}
static void
st_BlitFramebuffer(struct gl_context *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT);
struct st_context *st = st_context(ctx);
const uint pFilter = ((filter == GL_NEAREST)
? PIPE_TEX_FILTER_NEAREST
: PIPE_TEX_FILTER_LINEAR);
struct gl_framebuffer *readFB = ctx->ReadBuffer;
struct gl_framebuffer *drawFB = ctx->DrawBuffer;
struct {
GLint srcX0, srcY0, srcX1, srcY1;
GLint dstX0, dstY0, dstX1, dstY1;
} clip;
struct pipe_blit_info blit;
st_validate_state(st);
clip.srcX0 = srcX0;
clip.srcY0 = srcY0;
clip.srcX1 = srcX1;
clip.srcY1 = srcY1;
clip.dstX0 = dstX0;
clip.dstY0 = dstY0;
clip.dstX1 = dstX1;
clip.dstY1 = dstY1;
/* NOTE: If the src and dst dimensions don't match, we cannot simply adjust
* the integer coordinates to account for clipping (or scissors) because that
* would make us cut off fractional parts, affecting the result of the blit.
*
* XXX: This should depend on mask !
*/
if (!_mesa_clip_blit(ctx,
&clip.srcX0, &clip.srcY0, &clip.srcX1, &clip.srcY1,
&clip.dstX0, &clip.dstY0, &clip.dstX1, &clip.dstY1)) {
return; /* nothing to draw/blit */
}
blit.scissor_enable =
(dstX0 != clip.dstX0) ||
(dstY0 != clip.dstY0) ||
(dstX1 != clip.dstX1) ||
(dstY1 != clip.dstY1);
if (st_fb_orientation(drawFB) == Y_0_TOP) {
/* invert Y for dest */
dstY0 = drawFB->Height - dstY0;
dstY1 = drawFB->Height - dstY1;
/* invert Y for clip */
clip.dstY0 = drawFB->Height - clip.dstY0;
clip.dstY1 = drawFB->Height - clip.dstY1;
}
if (blit.scissor_enable) {
blit.scissor.minx = MIN2(clip.dstX0, clip.dstX1);
blit.scissor.miny = MIN2(clip.dstY0, clip.dstY1);
blit.scissor.maxx = MAX2(clip.dstX0, clip.dstX1);
blit.scissor.maxy = MAX2(clip.dstY0, clip.dstY1);
#if 0
debug_printf("scissor = (%i,%i)-(%i,%i)\n",
blit.scissor.minx,blit.scissor.miny,
blit.scissor.maxx,blit.scissor.maxy);
#endif
}
if (st_fb_orientation(readFB) == Y_0_TOP) {
/* invert Y for src */
srcY0 = readFB->Height - srcY0;
srcY1 = readFB->Height - srcY1;
}
if (srcY0 > srcY1 && dstY0 > dstY1) {
/* Both src and dst are upside down. Swap Y to make it
* right-side up to increase odds of using a fast path.
* Recall that all Gallium raster coords have Y=0=top.
*/
GLint tmp;
tmp = srcY0;
srcY0 = srcY1;
srcY1 = tmp;
tmp = dstY0;
dstY0 = dstY1;
dstY1 = tmp;
}
blit.src.box.depth = 1;
blit.dst.box.depth = 1;
/* Destination dimensions have to be positive: */
if (dstX0 < dstX1) {
blit.dst.box.x = dstX0;
blit.src.box.x = srcX0;
blit.dst.box.width = dstX1 - dstX0;
blit.src.box.width = srcX1 - srcX0;
} else {
blit.dst.box.x = dstX1;
blit.src.box.x = srcX1;
blit.dst.box.width = dstX0 - dstX1;
blit.src.box.width = srcX0 - srcX1;
}
if (dstY0 < dstY1) {
blit.dst.box.y = dstY0;
blit.src.box.y = srcY0;
blit.dst.box.height = dstY1 - dstY0;
blit.src.box.height = srcY1 - srcY0;
} else {
blit.dst.box.y = dstY1;
blit.src.box.y = srcY1;
blit.dst.box.height = dstY0 - dstY1;
blit.src.box.height = srcY0 - srcY1;
}
blit.filter = pFilter;
if (mask & GL_COLOR_BUFFER_BIT) {
struct gl_renderbuffer_attachment *srcAtt =
&readFB->Attachment[readFB->_ColorReadBufferIndex];
blit.mask = PIPE_MASK_RGBA;
if (srcAtt->Type == GL_TEXTURE) {
struct st_texture_object *srcObj = st_texture_object(srcAtt->Texture);
GLuint i;
if (!srcObj || !srcObj->pt) {
return;
}
for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
struct st_renderbuffer *dstRb =
st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
if (dstRb) {
struct pipe_surface *dstSurf = dstRb->surface;
if (dstSurf) {
blit.dst.resource = dstSurf->texture;
blit.dst.level = dstSurf->u.tex.level;
blit.dst.box.z = dstSurf->u.tex.first_layer;
blit.dst.format = util_format_linear(dstSurf->format);
blit.src.resource = srcObj->pt;
blit.src.level = srcAtt->TextureLevel;
blit.src.box.z = srcAtt->Zoffset + srcAtt->CubeMapFace;
blit.src.format = util_format_linear(srcObj->pt->format);
st->pipe->blit(st->pipe, &blit);
}
}
}
}
else {
struct st_renderbuffer *srcRb =
st_renderbuffer(readFB->_ColorReadBuffer);
struct pipe_surface *srcSurf;
GLuint i;
if (!srcRb || !srcRb->surface) {
return;
}
srcSurf = srcRb->surface;
for (i = 0; i < drawFB->_NumColorDrawBuffers; i++) {
struct st_renderbuffer *dstRb =
st_renderbuffer(drawFB->_ColorDrawBuffers[i]);
if (dstRb) {
struct pipe_surface *dstSurf = dstRb->surface;
if (dstSurf) {
blit.dst.resource = dstSurf->texture;
blit.dst.level = dstSurf->u.tex.level;
blit.dst.box.z = dstSurf->u.tex.first_layer;
blit.dst.format = util_format_linear(dstSurf->format);
blit.src.resource = srcSurf->texture;
blit.src.level = srcSurf->u.tex.level;
blit.src.box.z = srcSurf->u.tex.first_layer;
blit.src.format = util_format_linear(srcSurf->format);
st->pipe->blit(st->pipe, &blit);
}
}
}
}
}
if (mask & depthStencil) {
/* depth and/or stencil blit */
/* get src/dst depth surfaces */
struct gl_renderbuffer_attachment *srcDepth =
&readFB->Attachment[BUFFER_DEPTH];
struct gl_renderbuffer_attachment *dstDepth =
&drawFB->Attachment[BUFFER_DEPTH];
struct gl_renderbuffer_attachment *srcStencil =
&readFB->Attachment[BUFFER_STENCIL];
struct gl_renderbuffer_attachment *dstStencil =
&drawFB->Attachment[BUFFER_STENCIL];
struct st_renderbuffer *srcDepthRb =
st_renderbuffer(srcDepth->Renderbuffer);
struct st_renderbuffer *dstDepthRb =
st_renderbuffer(dstDepth->Renderbuffer);
struct pipe_surface *dstDepthSurf =
dstDepthRb ? dstDepthRb->surface : NULL;
struct st_renderbuffer *srcStencilRb =
st_renderbuffer(srcStencil->Renderbuffer);
struct st_renderbuffer *dstStencilRb =
st_renderbuffer(dstStencil->Renderbuffer);
struct pipe_surface *dstStencilSurf =
dstStencilRb ? dstStencilRb->surface : NULL;
if (st_is_depth_stencil_combined(srcDepth, srcStencil) &&
st_is_depth_stencil_combined(dstDepth, dstStencil)) {
blit.mask = 0;
if (mask & GL_DEPTH_BUFFER_BIT)
blit.mask |= PIPE_MASK_Z;
if (mask & GL_STENCIL_BUFFER_BIT)
blit.mask |= PIPE_MASK_S;
blit.dst.resource = dstDepthSurf->texture;
blit.dst.level = dstDepthSurf->u.tex.level;
blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
blit.dst.format = dstDepthSurf->format;
blit.src.resource = srcDepthRb->texture;
blit.src.level = srcDepthRb->surface->u.tex.level;
blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
blit.src.format = srcDepthRb->surface->format;
st->pipe->blit(st->pipe, &blit);
}
else {
/* blitting depth and stencil separately */
if (mask & GL_DEPTH_BUFFER_BIT) {
blit.mask = PIPE_MASK_Z;
blit.dst.resource = dstDepthSurf->texture;
blit.dst.level = dstDepthSurf->u.tex.level;
blit.dst.box.z = dstDepthSurf->u.tex.first_layer;
blit.dst.format = dstDepthSurf->format;
blit.src.resource = srcDepthRb->texture;
blit.src.level = srcDepthRb->surface->u.tex.level;
blit.src.box.z = srcDepthRb->surface->u.tex.first_layer;
blit.src.format = srcDepthRb->surface->format;
st->pipe->blit(st->pipe, &blit);
}
if (mask & GL_STENCIL_BUFFER_BIT) {
blit.mask = PIPE_MASK_S;
blit.dst.resource = dstStencilSurf->texture;
blit.dst.level = dstStencilSurf->u.tex.level;
blit.dst.box.z = dstStencilSurf->u.tex.first_layer;
blit.dst.format = dstStencilSurf->format;
blit.src.resource = srcStencilRb->texture;
blit.src.level = srcStencilRb->surface->u.tex.level;
blit.src.box.z = srcStencilRb->surface->u.tex.first_layer;
blit.src.format = srcStencilRb->surface->format;
st->pipe->blit(st->pipe, &blit);
}
}
}
}
/**
* Do a CopyTex[Sub]Image1/2/3D() using a hardware (blit) path if possible.
* Note that the region to copy has already been clipped so we know we
* won't read from outside the source renderbuffer's bounds.
*
* Note: srcY=0=Bottom of renderbuffer (GL convention)
*/
static void
st_copy_texsubimage(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLint destX, GLint destY, GLint destZ,
struct gl_renderbuffer *rb,
GLint srcX, GLint srcY,
GLsizei width, GLsizei height)
{
struct st_texture_image *stImage = st_texture_image(texImage);
const GLenum texBaseFormat = texImage->_BaseFormat;
struct gl_framebuffer *fb = ctx->ReadBuffer;
struct st_renderbuffer *strb;
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
enum pipe_format dest_format, src_format;
GLboolean matching_base_formats;
GLuint format_writemask, sample_count;
struct pipe_surface *dest_surface = NULL;
GLboolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
struct pipe_surface surf_tmpl;
unsigned int dst_usage;
GLint srcY0, srcY1;
/* make sure finalize_textures has been called?
*/
if (0) st_validate_state(st);
/* determine if copying depth or color data */
if (texBaseFormat == GL_DEPTH_COMPONENT ||
texBaseFormat == GL_DEPTH_STENCIL) {
strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
}
else {
/* texBaseFormat == GL_RGB, GL_RGBA, GL_ALPHA, etc */
strb = st_renderbuffer(fb->_ColorReadBuffer);
}
if (!strb || !strb->surface || !stImage->pt) {
debug_printf("%s: null strb or stImage\n", __FUNCTION__);
return;
}
sample_count = strb->surface->texture->nr_samples;
/* I believe this would be legal, presumably would need to do a resolve
for color, and for depth/stencil spec says to just use one of the
depth/stencil samples per pixel? Need some transfer clarifications. */
assert(sample_count < 2);
assert(strb);
assert(strb->surface);
assert(stImage->pt);
src_format = strb->surface->format;
dest_format = stImage->pt->format;
/*
* Determine if the src framebuffer and dest texture have the same
* base format. We need this to detect a case such as the framebuffer
* being GL_RGBA but the texture being GL_RGB. If the actual hardware
* texture format stores RGBA we need to set A=1 (overriding the
* framebuffer's alpha values). We can't do that with the blit or
* textured-quad paths.
*/
matching_base_formats =
(_mesa_get_format_base_format(strb->Base.Format) ==
_mesa_get_format_base_format(texImage->TexFormat));
if (ctx->_ImageTransferState) {
goto fallback;
}
if (matching_base_formats &&
src_format == dest_format &&
!do_flip) {
/* use surface_copy() / blit */
struct pipe_box src_box;
u_box_2d_zslice(srcX, srcY, strb->surface->u.tex.first_layer,
width, height, &src_box);
/* for resource_copy_region(), y=0=top, always */
pipe->resource_copy_region(pipe,
/* dest */
stImage->pt,
stImage->base.Level,
destX, destY, destZ + stImage->base.Face,
/* src */
strb->texture,
strb->surface->u.tex.level,
&src_box);
return;
}
if (texBaseFormat == GL_DEPTH_STENCIL) {
goto fallback;
}
if (texBaseFormat == GL_DEPTH_COMPONENT) {
format_writemask = TGSI_WRITEMASK_XYZW;
dst_usage = PIPE_BIND_DEPTH_STENCIL;
}
else {
format_writemask = compatible_src_dst_formats(ctx, &strb->Base, texImage);
dst_usage = PIPE_BIND_RENDER_TARGET;
}
if (!format_writemask ||
!screen->is_format_supported(screen, src_format,
PIPE_TEXTURE_2D, sample_count,
PIPE_BIND_SAMPLER_VIEW) ||
!screen->is_format_supported(screen, dest_format,
PIPE_TEXTURE_2D, 0,
dst_usage)) {
goto fallback;
}
if (do_flip) {
srcY1 = strb->Base.Height - srcY - height;
srcY0 = srcY1 + height;
}
else {
srcY0 = srcY;
srcY1 = srcY0 + height;
}
/* Disable conditional rendering. */
if (st->render_condition) {
pipe->render_condition(pipe, NULL, 0);
}
memset(&surf_tmpl, 0, sizeof(surf_tmpl));
surf_tmpl.format = util_format_linear(stImage->pt->format);
surf_tmpl.usage = dst_usage;
surf_tmpl.u.tex.level = stImage->base.Level;
surf_tmpl.u.tex.first_layer = stImage->base.Face + destZ;
surf_tmpl.u.tex.last_layer = stImage->base.Face + destZ;
dest_surface = pipe->create_surface(pipe, stImage->pt,
&surf_tmpl);
util_blit_pixels_writemask(st->blit,
strb->texture,
strb->surface->u.tex.level,
srcX, srcY0,
srcX + width, srcY1,
strb->surface->u.tex.first_layer,
dest_surface,
destX, destY,
destX + width, destY + height,
0.0, PIPE_TEX_MIPFILTER_NEAREST,
format_writemask);
pipe_surface_reference(&dest_surface, NULL);
/* Restore conditional rendering state. */
if (st->render_condition) {
pipe->render_condition(pipe, st->render_condition,
st->condition_mode);
}
return;
fallback:
/* software fallback */
fallback_copy_texsubimage(ctx,
strb, stImage, texBaseFormat,
destX, destY, destZ,
srcX, srcY, width, height);
}
static void
st_indirect_draw_vbo(struct gl_context *ctx,
GLuint mode,
struct gl_buffer_object *indirect_data,
GLsizeiptr indirect_offset,
unsigned draw_count,
unsigned stride,
struct gl_buffer_object *indirect_params,
GLsizeiptr indirect_params_offset,
const struct _mesa_index_buffer *ib)
{
struct st_context *st = st_context(ctx);
struct pipe_index_buffer ibuffer = {0};
struct pipe_draw_info info;
/* Mesa core state should have been validated already */
assert(ctx->NewState == 0x0);
assert(stride);
/* Validate state. */
if ((st->dirty | ctx->NewDriverState) & ST_PIPELINE_RENDER_STATE_MASK ||
st->gfx_shaders_may_be_dirty) {
st_validate_state(st, ST_PIPELINE_RENDER);
}
if (st->vertex_array_out_of_memory) {
return;
}
util_draw_init_info(&info);
if (ib) {
if (!setup_index_buffer(st, ib, &ibuffer)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "gl%sDrawElementsIndirect%s",
(draw_count > 1) ? "Multi" : "",
indirect_params ? "CountARB" : "");
return;
}
info.indexed = TRUE;
/* Primitive restart is not handled by the VBO module in this case. */
setup_primitive_restart(ctx, ib, &info);
}
info.mode = translate_prim(ctx, mode);
info.vertices_per_patch = ctx->TessCtrlProgram.patch_vertices;
info.indirect = st_buffer_object(indirect_data)->buffer;
info.indirect_offset = indirect_offset;
if (ST_DEBUG & DEBUG_DRAW) {
debug_printf("st/draw indirect: mode %s drawcount %d indexed %d\n",
u_prim_name(info.mode),
draw_count,
info.indexed);
}
if (!st->has_multi_draw_indirect) {
int i;
assert(!indirect_params);
info.indirect_count = 1;
for (i = 0; i < draw_count; i++) {
info.drawid = i;
cso_draw_vbo(st->cso_context, &info);
info.indirect_offset += stride;
}
} else {
info.indirect_count = draw_count;
info.indirect_stride = stride;
if (indirect_params) {
info.indirect_params = st_buffer_object(indirect_params)->buffer;
info.indirect_params_offset = indirect_params_offset;
}
cso_draw_vbo(st->cso_context, &info);
}
}
/**
* Called via ctx->Driver.Clear()
*/
static void
st_Clear(struct gl_context *ctx, GLbitfield mask)
{
struct st_context *st = st_context(ctx);
struct gl_renderbuffer *depthRb
= ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
struct gl_renderbuffer *stencilRb
= ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
GLbitfield quad_buffers = 0x0;
GLbitfield clear_buffers = 0x0;
GLuint i;
/* This makes sure the pipe has the latest scissor, etc values */
st_validate_state( st );
if (mask & BUFFER_BITS_COLOR) {
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
GLint b = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
if (b >= 0 && mask & (1 << b)) {
struct gl_renderbuffer *rb
= ctx->DrawBuffer->Attachment[b].Renderbuffer;
struct st_renderbuffer *strb = st_renderbuffer(rb);
int colormask_index = ctx->Extensions.EXT_draw_buffers2 ? i : 0;
if (!strb || !strb->surface)
continue;
if (is_color_disabled(ctx, colormask_index))
continue;
if (is_scissor_enabled(ctx, rb) ||
is_color_masked(ctx, colormask_index))
quad_buffers |= PIPE_CLEAR_COLOR0 << i;
else
clear_buffers |= PIPE_CLEAR_COLOR0 << i;
}
}
}
if (mask & BUFFER_BIT_DEPTH) {
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (strb->surface && ctx->Depth.Mask) {
if (is_scissor_enabled(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTH;
else
clear_buffers |= PIPE_CLEAR_DEPTH;
}
}
if (mask & BUFFER_BIT_STENCIL) {
struct st_renderbuffer *strb = st_renderbuffer(stencilRb);
if (strb->surface && !is_stencil_disabled(ctx, stencilRb)) {
if (is_scissor_enabled(ctx, stencilRb) ||
is_stencil_masked(ctx, stencilRb))
quad_buffers |= PIPE_CLEAR_STENCIL;
else
clear_buffers |= PIPE_CLEAR_STENCIL;
}
}
/* Always clear depth and stencil together.
* This can only happen when the stencil writemask is not a full mask.
*/
if (quad_buffers & PIPE_CLEAR_DEPTHSTENCIL &&
clear_buffers & PIPE_CLEAR_DEPTHSTENCIL) {
quad_buffers |= clear_buffers & PIPE_CLEAR_DEPTHSTENCIL;
clear_buffers &= ~PIPE_CLEAR_DEPTHSTENCIL;
}
/* Only use quad-based clearing for the renderbuffers which cannot
* use pipe->clear. We want to always use pipe->clear for the other
* renderbuffers, because it's likely to be faster.
*/
if (quad_buffers) {
clear_with_quad(ctx, quad_buffers);
}
if (clear_buffers) {
/* We can't translate the clear color to the colorbuffer format,
* because different colorbuffers may have different formats.
*/
st->pipe->clear(st->pipe, clear_buffers,
(union pipe_color_union*)&ctx->Color.ClearColor,
ctx->Depth.Clear, ctx->Stencil.Clear);
}
if (mask & BUFFER_BIT_ACCUM)
_mesa_clear_accum_buffer(ctx);
}
static void
st_DrawTex(struct gl_context *ctx, GLfloat x, GLfloat y, GLfloat z,
GLfloat width, GLfloat height)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct cso_context *cso = ctx->st->cso_context;
struct pipe_resource *vbuffer;
struct pipe_transfer *vbuffer_transfer;
GLuint i, numTexCoords, numAttribs;
GLboolean emitColor;
uint semantic_names[2 + MAX_TEXTURE_UNITS];
uint semantic_indexes[2 + MAX_TEXTURE_UNITS];
struct pipe_vertex_element velements[2 + MAX_TEXTURE_UNITS];
GLbitfield inputs = VERT_BIT_POS;
st_validate_state(st);
/* determine if we need vertex color */
if (ctx->FragmentProgram._Current->Base.InputsRead & FRAG_BIT_COL0)
emitColor = GL_TRUE;
else
emitColor = GL_FALSE;
/* determine how many enabled sets of texcoords */
numTexCoords = 0;
for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled & TEXTURE_2D_BIT) {
inputs |= VERT_BIT_TEX(i);
numTexCoords++;
}
}
/* total number of attributes per vertex */
numAttribs = 1 + emitColor + numTexCoords;
/* create the vertex buffer */
vbuffer = pipe_buffer_create(pipe->screen, PIPE_BIND_VERTEX_BUFFER,
PIPE_USAGE_STREAM,
numAttribs * 4 * 4 * sizeof(GLfloat));
/* load vertex buffer */
{
#define SET_ATTRIB(VERT, ATTR, X, Y, Z, W) \
do { \
GLuint k = (((VERT) * numAttribs + (ATTR)) * 4); \
assert(k < 4 * 4 * numAttribs); \
vbuf[k + 0] = X; \
vbuf[k + 1] = Y; \
vbuf[k + 2] = Z; \
vbuf[k + 3] = W; \
} while (0)
const GLfloat x0 = x, y0 = y, x1 = x + width, y1 = y + height;
GLfloat *vbuf = (GLfloat *) pipe_buffer_map(pipe, vbuffer,
PIPE_TRANSFER_WRITE,
&vbuffer_transfer);
GLuint attr;
z = CLAMP(z, 0.0f, 1.0f);
/* positions (in clip coords) */
{
const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
const GLfloat fb_width = (GLfloat)fb->Width;
const GLfloat fb_height = (GLfloat)fb->Height;
const GLfloat clip_x0 = (GLfloat)(x0 / fb_width * 2.0 - 1.0);
const GLfloat clip_y0 = (GLfloat)(y0 / fb_height * 2.0 - 1.0);
const GLfloat clip_x1 = (GLfloat)(x1 / fb_width * 2.0 - 1.0);
const GLfloat clip_y1 = (GLfloat)(y1 / fb_height * 2.0 - 1.0);
SET_ATTRIB(0, 0, clip_x0, clip_y0, z, 1.0f); /* lower left */
SET_ATTRIB(1, 0, clip_x1, clip_y0, z, 1.0f); /* lower right */
SET_ATTRIB(2, 0, clip_x1, clip_y1, z, 1.0f); /* upper right */
SET_ATTRIB(3, 0, clip_x0, clip_y1, z, 1.0f); /* upper left */
semantic_names[0] = TGSI_SEMANTIC_POSITION;
semantic_indexes[0] = 0;
}
/* colors */
if (emitColor) {
const GLfloat *c = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
SET_ATTRIB(0, 1, c[0], c[1], c[2], c[3]);
SET_ATTRIB(1, 1, c[0], c[1], c[2], c[3]);
SET_ATTRIB(2, 1, c[0], c[1], c[2], c[3]);
SET_ATTRIB(3, 1, c[0], c[1], c[2], c[3]);
semantic_names[1] = TGSI_SEMANTIC_COLOR;
semantic_indexes[1] = 0;
attr = 2;
}
else {
attr = 1;
}
/* texcoords */
for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled & TEXTURE_2D_BIT) {
struct gl_texture_object *obj = ctx->Texture.Unit[i]._Current;
struct gl_texture_image *img = obj->Image[0][obj->BaseLevel];
const GLfloat wt = (GLfloat) img->Width;
const GLfloat ht = (GLfloat) img->Height;
const GLfloat s0 = obj->CropRect[0] / wt;
const GLfloat t0 = obj->CropRect[1] / ht;
const GLfloat s1 = (obj->CropRect[0] + obj->CropRect[2]) / wt;
const GLfloat t1 = (obj->CropRect[1] + obj->CropRect[3]) / ht;
/*printf("crop texcoords: %g, %g .. %g, %g\n", s0, t0, s1, t1);*/
SET_ATTRIB(0, attr, s0, t0, 0.0f, 1.0f); /* lower left */
SET_ATTRIB(1, attr, s1, t0, 0.0f, 1.0f); /* lower right */
SET_ATTRIB(2, attr, s1, t1, 0.0f, 1.0f); /* upper right */
SET_ATTRIB(3, attr, s0, t1, 0.0f, 1.0f); /* upper left */
semantic_names[attr] = TGSI_SEMANTIC_GENERIC;
semantic_indexes[attr] = 0;
attr++;
}
}
pipe_buffer_unmap(pipe, vbuffer_transfer);
#undef SET_ATTRIB
}
cso_save_viewport(cso);
cso_save_vertex_shader(cso);
cso_save_vertex_elements(cso);
cso_save_vertex_buffers(cso);
{
void *vs = lookup_shader(pipe, numAttribs,
semantic_names, semantic_indexes);
cso_set_vertex_shader_handle(cso, vs);
}
for (i = 0; i < numAttribs; i++) {
velements[i].src_offset = i * 4 * sizeof(float);
velements[i].instance_divisor = 0;
velements[i].vertex_buffer_index = 0;
velements[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
}
cso_set_vertex_elements(cso, numAttribs, velements);
/* viewport state: viewport matching window dims */
{
const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
const GLboolean invert = (st_fb_orientation(fb) == Y_0_TOP);
const GLfloat width = (GLfloat)fb->Width;
const GLfloat height = (GLfloat)fb->Height;
struct pipe_viewport_state vp;
vp.scale[0] = 0.5f * width;
vp.scale[1] = height * (invert ? -0.5f : 0.5f);
vp.scale[2] = 1.0f;
vp.scale[3] = 1.0f;
vp.translate[0] = 0.5f * width;
vp.translate[1] = 0.5f * height;
vp.translate[2] = 0.0f;
vp.translate[3] = 0.0f;
cso_set_viewport(cso, &vp);
}
util_draw_vertex_buffer(pipe, cso, vbuffer,
0, /* offset */
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
numAttribs); /* attribs/vert */
pipe_resource_reference(&vbuffer, NULL);
/* restore state */
cso_restore_viewport(cso);
cso_restore_vertex_shader(cso);
cso_restore_vertex_elements(cso);
cso_restore_vertex_buffers(cso);
}
/**
* This uses a blit to copy the read buffer to a texture format which matches
* the format and type combo and then a fast read-back is done using memcpy.
* We can do arbitrary X/Y/Z/W/0/1 swizzling here as long as there is
* a format which matches the swizzling.
*
* If such a format isn't available, we fall back to _mesa_readpixels.
*
* NOTE: Some drivers use a blit to convert between tiled and linear
* texture layouts during texture uploads/downloads, so the blit
* we do here should be free in such cases.
*/
static void
st_readpixels(struct gl_context *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *pack,
GLvoid *pixels)
{
struct st_context *st = st_context(ctx);
struct gl_renderbuffer *rb =
_mesa_get_read_renderbuffer_for_format(ctx, format);
struct st_renderbuffer *strb = st_renderbuffer(rb);
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
struct pipe_resource *src;
struct pipe_resource *dst = NULL;
struct pipe_resource dst_templ;
enum pipe_format dst_format, src_format;
struct pipe_blit_info blit;
unsigned bind = PIPE_BIND_TRANSFER_READ;
struct pipe_transfer *tex_xfer;
ubyte *map = NULL;
/* Validate state (to be sure we have up-to-date framebuffer surfaces)
* and flush the bitmap cache prior to reading. */
st_validate_state(st);
st_flush_bitmap_cache(st);
if (!st->prefer_blit_based_texture_transfer) {
goto fallback;
}
/* This must be done after state validation. */
src = strb->texture;
/* XXX Fallback for depth-stencil formats due to an incomplete
* stencil blit implementation in some drivers. */
if (format == GL_DEPTH_STENCIL) {
goto fallback;
}
/* We are creating a texture of the size of the region being read back.
* Need to check for NPOT texture support. */
if (!screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES) &&
(!util_is_power_of_two(width) ||
!util_is_power_of_two(height))) {
goto fallback;
}
/* If the base internal format and the texture format don't match, we have
* to use the slow path. */
if (rb->_BaseFormat !=
_mesa_get_format_base_format(rb->Format)) {
goto fallback;
}
/* See if the texture format already matches the format and type,
* in which case the memcpy-based fast path will likely be used and
* we don't have to blit. */
if (_mesa_format_matches_format_and_type(rb->Format, format,
type, pack->SwapBytes)) {
goto fallback;
}
if (_mesa_readpixels_needs_slow_path(ctx, format, type, GL_TRUE)) {
goto fallback;
}
/* Convert the source format to what is expected by ReadPixels
* and see if it's supported. */
src_format = util_format_linear(src->format);
src_format = util_format_luminance_to_red(src_format);
src_format = util_format_intensity_to_red(src_format);
if (!src_format ||
!screen->is_format_supported(screen, src_format, src->target,
src->nr_samples,
PIPE_BIND_SAMPLER_VIEW)) {
goto fallback;
}
if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL)
bind |= PIPE_BIND_DEPTH_STENCIL;
else
bind |= PIPE_BIND_RENDER_TARGET;
/* Choose the destination format by finding the best match
* for the format+type combo. */
dst_format = st_choose_matching_format(screen, bind, format, type,
pack->SwapBytes);
if (dst_format == PIPE_FORMAT_NONE) {
goto fallback;
}
/* create the destination texture */
memset(&dst_templ, 0, sizeof(dst_templ));
dst_templ.target = PIPE_TEXTURE_2D;
dst_templ.format = dst_format;
dst_templ.bind = bind;
dst_templ.usage = PIPE_USAGE_STAGING;
st_gl_texture_dims_to_pipe_dims(GL_TEXTURE_2D, width, height, 1,
&dst_templ.width0, &dst_templ.height0,
&dst_templ.depth0, &dst_templ.array_size);
dst = screen->resource_create(screen, &dst_templ);
if (!dst) {
goto fallback;
}
memset(&blit, 0, sizeof(blit));
blit.src.resource = src;
blit.src.level = strb->surface->u.tex.level;
blit.src.format = src_format;
blit.dst.resource = dst;
blit.dst.level = 0;
blit.dst.format = dst->format;
blit.src.box.x = x;
blit.dst.box.x = 0;
blit.src.box.y = y;
blit.dst.box.y = 0;
blit.src.box.z = strb->surface->u.tex.first_layer;
blit.dst.box.z = 0;
blit.src.box.width = blit.dst.box.width = width;
blit.src.box.height = blit.dst.box.height = height;
blit.src.box.depth = blit.dst.box.depth = 1;
blit.mask = st_get_blit_mask(rb->_BaseFormat, format);
blit.filter = PIPE_TEX_FILTER_NEAREST;
blit.scissor_enable = FALSE;
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
blit.src.box.y = rb->Height - blit.src.box.y;
blit.src.box.height = -blit.src.box.height;
}
/* blit */
st->pipe->blit(st->pipe, &blit);
/* map resources */
pixels = _mesa_map_pbo_dest(ctx, pack, pixels);
map = pipe_transfer_map_3d(pipe, dst, 0, PIPE_TRANSFER_READ,
0, 0, 0, width, height, 1, &tex_xfer);
if (!map) {
_mesa_unmap_pbo_dest(ctx, pack);
pipe_resource_reference(&dst, NULL);
goto fallback;
}
/* memcpy data into a user buffer */
{
const uint bytesPerRow = width * util_format_get_blocksize(dst_format);
GLuint row;
for (row = 0; row < (unsigned) height; row++) {
GLvoid *dest = _mesa_image_address3d(pack, pixels,
width, height, format,
type, 0, row, 0);
memcpy(dest, map, bytesPerRow);
map += tex_xfer->stride;
}
}
pipe_transfer_unmap(pipe, tex_xfer);
_mesa_unmap_pbo_dest(ctx, pack);
pipe_resource_reference(&dst, NULL);
return;
fallback:
_mesa_readpixels(ctx, x, y, width, height, format, type, pack, pixels);
}
/**
* This function gets plugged into the VBO module and is called when
* we have something to render.
* Basically, translate the information into the format expected by gallium.
*/
void
st_draw_vbo(struct gl_context *ctx,
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index,
struct gl_transform_feedback_object *tfb_vertcount,
struct gl_buffer_object *indirect)
{
struct st_context *st = st_context(ctx);
struct pipe_index_buffer ibuffer = {0};
struct pipe_draw_info info;
const struct gl_client_array **arrays = ctx->Array._DrawArrays;
unsigned i;
/* Mesa core state should have been validated already */
assert(ctx->NewState == 0x0);
/* Validate state. */
if (st->dirty.st || ctx->NewDriverState) {
st_validate_state(st);
#if 0
if (MESA_VERBOSE & VERBOSE_GLSL) {
check_uniforms(ctx);
}
#else
(void) check_uniforms;
#endif
}
if (st->vertex_array_out_of_memory) {
return;
}
util_draw_init_info(&info);
if (ib) {
/* Get index bounds for user buffers. */
if (!index_bounds_valid)
if (!all_varyings_in_vbos(arrays))
vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index,
nr_prims);
if (!setup_index_buffer(st, ib, &ibuffer)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBegin/DrawElements/DrawArray");
return;
}
info.indexed = TRUE;
if (min_index != ~0 && max_index != ~0) {
info.min_index = min_index;
info.max_index = max_index;
}
/* The VBO module handles restart for the non-indexed GLDrawArrays
* so we only set these fields for indexed drawing:
*/
info.primitive_restart = ctx->Array._PrimitiveRestart;
info.restart_index = ctx->Array.RestartIndex;
}
else {
/* Transform feedback drawing is always non-indexed. */
/* Set info.count_from_stream_output. */
if (tfb_vertcount) {
st_transform_feedback_draw_init(tfb_vertcount, &info);
}
}
/* do actual drawing */
for (i = 0; i < nr_prims; i++) {
info.mode = translate_prim(ctx, prims[i].mode);
info.start = prims[i].start;
info.count = prims[i].count;
info.start_instance = prims[i].base_instance;
info.instance_count = prims[i].num_instances;
info.index_bias = prims[i].basevertex;
if (!ib) {
info.min_index = info.start;
info.max_index = info.start + info.count - 1;
}
if (ST_DEBUG & DEBUG_DRAW) {
debug_printf("st/draw: mode %s start %u count %u indexed %d\n",
u_prim_name(info.mode),
info.start,
info.count,
info.indexed);
}
if (info.count_from_stream_output) {
cso_draw_vbo(st->cso_context, &info);
}
else if (info.primitive_restart) {
/* don't trim, restarts might be inside index list */
cso_draw_vbo(st->cso_context, &info);
}
else if (u_trim_pipe_prim(prims[i].mode, &info.count)) {
cso_draw_vbo(st->cso_context, &info);
}
}
if (ib && st->indexbuf_uploader && !_mesa_is_bufferobj(ib->obj)) {
pipe_resource_reference(&ibuffer.buffer, NULL);
}
}
