/**
* 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.fb_width;
const float clip_y_scale = 2.0f / st->state.fb_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.vs) {
init_bitmap_state(st);
}
st_flush_bitmap_cache(st);
st_validate_state(st, ST_PIPELINE_META);
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(pipe->stream_uploader, 0, num_vert_bytes, 4,
&vb.buffer_offset, &vb.buffer.resource, (void **) &verts);
if (unlikely(!verts)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCallLists(bitmap text)");
goto out;
}
/* 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(pipe->stream_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);
out:
restore_render_state(ctx);
pipe_resource_reference(&vb.buffer.resource, NULL);
pipe_sampler_view_reference(&sv, NULL);
/* We uploaded modified constants, need to invalidate them. */
st->dirty |= ST_NEW_FS_CONSTANTS;
}
/**
* Create a mipmap generation context.
* The idea is to create one of these and re-use it each time we need to
* generate a mipmap.
*/
struct gen_mipmap_state *
util_create_gen_mipmap(struct pipe_context *pipe,
struct cso_context *cso)
{
struct gen_mipmap_state *ctx;
uint i;
ctx = CALLOC_STRUCT(gen_mipmap_state);
if (!ctx)
return NULL;
ctx->pipe = pipe;
ctx->cso = cso;
/* disabled blending/masking */
memset(&ctx->blend_keep_color, 0, sizeof(ctx->blend_keep_color));
memset(&ctx->blend_write_color, 0, sizeof(ctx->blend_write_color));
ctx->blend_write_color.rt[0].colormask = PIPE_MASK_RGBA;
/* no-op depth/stencil/alpha */
memset(&ctx->dsa_keep_depth, 0, sizeof(ctx->dsa_keep_depth));
memset(&ctx->dsa_write_depth, 0, sizeof(ctx->dsa_write_depth));
ctx->dsa_write_depth.depth.enabled = 1;
ctx->dsa_write_depth.depth.func = PIPE_FUNC_ALWAYS;
ctx->dsa_write_depth.depth.writemask = 1;
/* rasterizer */
memset(&ctx->rasterizer, 0, sizeof(ctx->rasterizer));
ctx->rasterizer.cull_face = PIPE_FACE_NONE;
ctx->rasterizer.half_pixel_center = 1;
ctx->rasterizer.bottom_edge_rule = 1;
ctx->rasterizer.depth_clip = 1;
/* sampler state */
memset(&ctx->sampler, 0, sizeof(ctx->sampler));
ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
ctx->sampler.normalized_coords = 1;
/* vertex elements state */
memset(&ctx->velem[0], 0, sizeof(ctx->velem[0]) * 2);
for (i = 0; i < 2; i++) {
ctx->velem[i].src_offset = i * 4 * sizeof(float);
ctx->velem[i].instance_divisor = 0;
ctx->velem[i].vertex_buffer_index = cso_get_aux_vertex_buffer_slot(cso);
ctx->velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
}
/* vertex data that doesn't change */
for (i = 0; i < 4; i++) {
ctx->vertices[i][0][2] = 0.0f; /* z */
ctx->vertices[i][0][3] = 1.0f; /* w */
ctx->vertices[i][1][3] = 1.0f; /* q */
}
/* Note: the actual vertex buffer is allocated as needed below */
return ctx;
}
/**
* Draw a quad with given position, texcoords and color.
*/
bool
st_draw_quad(struct st_context *st,
float x0, float y0, float x1, float y1, float z,
float s0, float t0, float s1, float t1,
const float *color,
unsigned num_instances)
{
struct pipe_vertex_buffer vb = {0};
struct st_util_vertex *verts;
vb.stride = sizeof(struct st_util_vertex);
u_upload_alloc(st->uploader, 0, 4 * sizeof(struct st_util_vertex), 4,
&vb.buffer_offset, &vb.buffer, (void **) &verts);
if (!vb.buffer) {
return false;
}
/* lower-left */
verts[0].x = x0;
verts[0].y = y1;
verts[0].z = z;
verts[0].r = color[0];
verts[0].g = color[1];
verts[0].b = color[2];
verts[0].a = color[3];
verts[0].s = s0;
verts[0].t = t0;
/* lower-right */
verts[1].x = x1;
verts[1].y = y1;
verts[1].z = z;
verts[1].r = color[0];
verts[1].g = color[1];
verts[1].b = color[2];
verts[1].a = color[3];
verts[1].s = s1;
verts[1].t = t0;
/* upper-right */
verts[2].x = x1;
verts[2].y = y0;
verts[2].z = z;
verts[2].r = color[0];
verts[2].g = color[1];
verts[2].b = color[2];
verts[2].a = color[3];
verts[2].s = s1;
verts[2].t = t1;
/* upper-left */
verts[3].x = x0;
verts[3].y = y0;
verts[3].z = z;
verts[3].r = color[0];
verts[3].g = color[1];
verts[3].b = color[2];
verts[3].a = color[3];
verts[3].s = s0;
verts[3].t = t1;
u_upload_unmap(st->uploader);
/* At the time of writing, cso_get_aux_vertex_buffer_slot() always returns
* zero. If that ever changes we need to audit the calls to that function
* and make sure the slot number is used consistently everywhere.
*/
assert(cso_get_aux_vertex_buffer_slot(st->cso_context) == 0);
cso_set_vertex_buffers(st->cso_context,
cso_get_aux_vertex_buffer_slot(st->cso_context),
1, &vb);
if (num_instances > 1) {
cso_draw_arrays_instanced(st->cso_context, PIPE_PRIM_TRIANGLE_FAN, 0, 4,
0, num_instances);
} else {
cso_draw_arrays(st->cso_context, PIPE_PRIM_TRIANGLE_FAN, 0, 4);
}
pipe_resource_reference(&vb.buffer, NULL);
return true;
}
/**
* Generate mipmap images. It's assumed all needed texture memory is
* already allocated.
*
* \param psv the sampler view to the texture to generate mipmap levels for
* \param face which cube face to generate mipmaps for (0 for non-cube maps)
* \param baseLevel the first mipmap level to use as a src
* \param lastLevel the last mipmap level to generate
* \param filter the minification filter used to generate mipmap levels with
* \param filter one of PIPE_TEX_FILTER_LINEAR, PIPE_TEX_FILTER_NEAREST
*/
void
util_gen_mipmap(struct gen_mipmap_state *ctx,
struct pipe_sampler_view *psv,
uint face, uint baseLevel, uint lastLevel, uint filter)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
struct pipe_framebuffer_state fb;
struct pipe_resource *pt = psv->texture;
uint dstLevel;
uint offset;
uint type;
boolean is_depth = util_format_is_depth_or_stencil(psv->format);
/* The texture object should have room for the levels which we're
* about to generate.
*/
assert(lastLevel <= pt->last_level);
/* If this fails, why are we here? */
assert(lastLevel > baseLevel);
assert(filter == PIPE_TEX_FILTER_LINEAR ||
filter == PIPE_TEX_FILTER_NEAREST);
type = util_pipe_tex_to_tgsi_tex(pt->target, 1);
/* check if we can render in the texture's format */
if (!screen->is_format_supported(screen, psv->format, pt->target,
pt->nr_samples,
is_depth ? PIPE_BIND_DEPTH_STENCIL :
PIPE_BIND_RENDER_TARGET)) {
/* The caller should check if the format is renderable. */
assert(0);
return;
}
/* save state (restored below) */
cso_save_blend(ctx->cso);
cso_save_depth_stencil_alpha(ctx->cso);
cso_save_rasterizer(ctx->cso);
cso_save_sample_mask(ctx->cso);
cso_save_samplers(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_save_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_save_stream_outputs(ctx->cso);
cso_save_framebuffer(ctx->cso);
cso_save_fragment_shader(ctx->cso);
cso_save_vertex_shader(ctx->cso);
cso_save_geometry_shader(ctx->cso);
cso_save_viewport(ctx->cso);
cso_save_vertex_elements(ctx->cso);
cso_save_aux_vertex_buffer_slot(ctx->cso);
cso_save_render_condition(ctx->cso);
/* bind our state */
cso_set_blend(ctx->cso, is_depth ? &ctx->blend_keep_color :
&ctx->blend_write_color);
cso_set_depth_stencil_alpha(ctx->cso, is_depth ? &ctx->dsa_write_depth :
&ctx->dsa_keep_depth);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_sample_mask(ctx->cso, ~0);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
cso_set_stream_outputs(ctx->cso, 0, NULL, NULL);
cso_set_render_condition(ctx->cso, NULL, FALSE, 0);
set_fragment_shader(ctx, type, is_depth);
set_vertex_shader(ctx);
cso_set_geometry_shader_handle(ctx->cso, NULL);
/* init framebuffer state */
memset(&fb, 0, sizeof(fb));
/* set min/mag to same filter for faster sw speed */
ctx->sampler.mag_img_filter = filter;
ctx->sampler.min_img_filter = filter;
for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
const uint srcLevel = dstLevel - 1;
struct pipe_viewport_state vp;
unsigned nr_layers, layer, i;
float rcoord = 0.0f;
if (pt->target == PIPE_TEXTURE_3D)
nr_layers = u_minify(pt->depth0, dstLevel);
else if (pt->target == PIPE_TEXTURE_2D_ARRAY ||
pt->target == PIPE_TEXTURE_1D_ARRAY ||
pt->target == PIPE_TEXTURE_CUBE_ARRAY)
nr_layers = pt->array_size;
else
nr_layers = 1;
for (i = 0; i < nr_layers; i++) {
struct pipe_surface *surf, surf_templ;
if (pt->target == PIPE_TEXTURE_3D) {
/* in theory with geom shaders and driver with full layer support
could do that in one go. */
layer = i;
/* XXX hmm really? */
rcoord = (float)layer / (float)nr_layers + 1.0f / (float)(nr_layers * 2);
} else if (pt->target == PIPE_TEXTURE_2D_ARRAY ||
pt->target == PIPE_TEXTURE_1D_ARRAY) {
layer = i;
rcoord = (float)layer;
} else if (pt->target == PIPE_TEXTURE_CUBE_ARRAY) {
layer = i;
face = layer % 6;
rcoord = layer / 6;
} else
layer = face;
u_surface_default_template(&surf_templ, pt);
surf_templ.u.tex.level = dstLevel;
surf_templ.u.tex.first_layer = layer;
surf_templ.u.tex.last_layer = layer;
surf = pipe->create_surface(pipe, pt, &surf_templ);
/*
* Setup framebuffer / dest surface
*/
if (is_depth) {
fb.nr_cbufs = 0;
fb.zsbuf = surf;
}
else {
fb.nr_cbufs = 1;
fb.cbufs[0] = surf;
}
fb.width = u_minify(pt->width0, dstLevel);
fb.height = u_minify(pt->height0, dstLevel);
cso_set_framebuffer(ctx->cso, &fb);
/* viewport */
vp.scale[0] = 0.5f * fb.width;
vp.scale[1] = 0.5f * fb.height;
vp.scale[2] = 1.0f;
vp.scale[3] = 1.0f;
vp.translate[0] = 0.5f * fb.width;
vp.translate[1] = 0.5f * fb.height;
vp.translate[2] = 0.0f;
vp.translate[3] = 0.0f;
cso_set_viewport(ctx->cso, &vp);
/*
* Setup sampler state
* Note: we should only have to set the min/max LOD clamps to ensure
* we grab texels from the right mipmap level. But some hardware
* has trouble with min clamping so we also set the lod_bias to
* try to work around that.
*/
ctx->sampler.min_lod = ctx->sampler.max_lod = (float) srcLevel;
ctx->sampler.lod_bias = (float) srcLevel;
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler);
cso_single_sampler_done(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, 1, &psv);
/* quad coords in clip coords */
offset = set_vertex_data(ctx,
pt->target,
face,
rcoord);
util_draw_vertex_buffer(ctx->pipe,
ctx->cso,
ctx->vbuf,
cso_get_aux_vertex_buffer_slot(ctx->cso),
offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
2); /* attribs/vert */
/* need to signal that the texture has changed _after_ rendering to it */
pipe_surface_reference( &surf, NULL );
}
}
/* restore state we changed */
cso_restore_blend(ctx->cso);
cso_restore_depth_stencil_alpha(ctx->cso);
cso_restore_rasterizer(ctx->cso);
cso_restore_sample_mask(ctx->cso);
cso_restore_samplers(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_restore_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_restore_framebuffer(ctx->cso);
cso_restore_fragment_shader(ctx->cso);
cso_restore_vertex_shader(ctx->cso);
cso_restore_geometry_shader(ctx->cso);
cso_restore_viewport(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
cso_restore_stream_outputs(ctx->cso);
cso_restore_aux_vertex_buffer_slot(ctx->cso);
cso_restore_render_condition(ctx->cso);
}
static struct st_context *
st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
const struct st_config_options *options)
{
struct pipe_screen *screen = pipe->screen;
uint i;
struct st_context *st = ST_CALLOC_STRUCT( st_context );
st->options = *options;
ctx->st = st;
st->ctx = ctx;
st->pipe = pipe;
/* XXX: this is one-off, per-screen init: */
st_debug_init();
/* state tracker needs the VBO module */
_vbo_CreateContext(ctx);
st->dirty.mesa = ~0;
st->dirty.st = ~0;
st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
PIPE_BIND_INDEX_BUFFER);
}
if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
unsigned alignment =
screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
PIPE_BIND_CONSTANT_BUFFER);
}
st->cso_context = cso_create_context(pipe);
st_init_atoms( st );
st_init_bitmap(st);
st_init_clear(st);
st_init_draw( st );
st_init_generate_mipmap(st);
if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
st->internal_target = PIPE_TEXTURE_2D;
else
st->internal_target = PIPE_TEXTURE_RECT;
/* Vertex element objects used for drawing rectangles for glBitmap,
* glDrawPixels, glClear, etc.
*/
for (i = 0; i < Elements(st->velems_util_draw); i++) {
memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
st->velems_util_draw[i].instance_divisor = 0;
st->velems_util_draw[i].vertex_buffer_index =
cso_get_aux_vertex_buffer_slot(st->cso_context);
st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
}
/* we want all vertex data to be placed in buffer objects */
vbo_use_buffer_objects(ctx);
/* make sure that no VBOs are left mapped when we're drawing. */
vbo_always_unmap_buffers(ctx);
/* Need these flags:
*/
st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
st->pixel_xfer.cache = _mesa_new_program_cache();
st->has_stencil_export =
screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
/* GL limits and extensions */
st_init_limits(st);
st_init_extensions(st);
_mesa_compute_version(ctx);
_mesa_initialize_dispatch_tables(ctx);
_mesa_initialize_vbo_vtxfmt(ctx);
return st;
}
/* Setup all vertex pipeline state, rasterizer state, and fragment shader
* constants, and issue the draw call for PBO upload/download.
*
* The caller is responsible for saving and restoring state, as well as for
* setting other fragment shader state (fragment shader, samplers), and
* framebuffer/viewport/DSA/blend state.
*/
bool
st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr,
unsigned surface_width, unsigned surface_height)
{
struct cso_context *cso = st->cso_context;
/* Setup vertex and geometry shaders */
if (!st->pbo.vs) {
st->pbo.vs = st_pbo_create_vs(st);
if (!st->pbo.vs)
return false;
}
if (addr->depth != 1 && st->pbo.use_gs && !st->pbo.gs) {
st->pbo.gs = st_pbo_create_gs(st);
if (!st->pbo.gs)
return false;
}
cso_set_vertex_shader_handle(cso, st->pbo.vs);
cso_set_geometry_shader_handle(cso, addr->depth != 1 ? st->pbo.gs : NULL);
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
/* Upload vertices */
{
struct pipe_vertex_buffer vbo;
struct pipe_vertex_element velem;
float x0 = (float) addr->xoffset / surface_width * 2.0f - 1.0f;
float y0 = (float) addr->yoffset / surface_height * 2.0f - 1.0f;
float x1 = (float) (addr->xoffset + addr->width) / surface_width * 2.0f - 1.0f;
float y1 = (float) (addr->yoffset + addr->height) / surface_height * 2.0f - 1.0f;
float *verts = NULL;
vbo.user_buffer = NULL;
vbo.buffer = NULL;
vbo.stride = 2 * sizeof(float);
u_upload_alloc(st->uploader, 0, 8 * sizeof(float), 4,
&vbo.buffer_offset, &vbo.buffer, (void **) &verts);
if (!verts)
return false;
verts[0] = x0;
verts[1] = y0;
verts[2] = x0;
verts[3] = y1;
verts[4] = x1;
verts[5] = y0;
verts[6] = x1;
verts[7] = y1;
u_upload_unmap(st->uploader);
velem.src_offset = 0;
velem.instance_divisor = 0;
velem.vertex_buffer_index = cso_get_aux_vertex_buffer_slot(cso);
velem.src_format = PIPE_FORMAT_R32G32_FLOAT;
cso_set_vertex_elements(cso, 1, &velem);
cso_set_vertex_buffers(cso, velem.vertex_buffer_index, 1, &vbo);
pipe_resource_reference(&vbo.buffer, NULL);
}
/* Upload constants */
{
struct pipe_constant_buffer cb;
if (st->constbuf_uploader) {
cb.buffer = NULL;
cb.user_buffer = NULL;
u_upload_data(st->constbuf_uploader, 0, sizeof(addr->constants),
st->ctx->Const.UniformBufferOffsetAlignment,
&addr->constants, &cb.buffer_offset, &cb.buffer);
if (!cb.buffer)
return false;
u_upload_unmap(st->constbuf_uploader);
} else {
cb.buffer = NULL;
cb.user_buffer = &addr->constants;
cb.buffer_offset = 0;
}
cb.buffer_size = sizeof(addr->constants);
cso_set_constant_buffer(cso, PIPE_SHADER_FRAGMENT, 0, &cb);
pipe_resource_reference(&cb.buffer, NULL);
}
/* Rasterizer state */
cso_set_rasterizer(cso, &st->pbo.raster);
/* Disable stream output */
cso_set_stream_outputs(cso, 0, NULL, 0);
if (addr->depth == 1) {
cso_draw_arrays(cso, PIPE_PRIM_TRIANGLE_STRIP, 0, 4);
} else {
cso_draw_arrays_instanced(cso, PIPE_PRIM_TRIANGLE_STRIP,
0, 4, 0, addr->depth);
}
return true;
}
/**
* Copy pixel block from src sampler view to dst surface.
*
* The sampler view's first_level field indicates the source
* mipmap level to use.
*
* The sampler view's first_layer indicate the layer to use, but for
* cube maps it must point to the first face. Face is passed in src_face.
*
* The main advantage over util_blit_pixels is that it allows to specify swizzles in
* pipe_sampler_view::swizzle_?.
*
* But there is no control over blitting Z and/or stencil.
*/
void
util_blit_pixels_tex(struct blit_state *ctx,
struct pipe_sampler_view *src_sampler_view,
int srcX0, int srcY0,
int srcX1, int srcY1,
unsigned src_face,
struct pipe_surface *dst,
int dstX0, int dstY0,
int dstX1, int dstY1,
float z, uint filter)
{
boolean normalized = src_sampler_view->texture->target != PIPE_TEXTURE_RECT;
struct pipe_framebuffer_state fb;
float s0, t0, s1, t1;
unsigned offset;
struct pipe_resource *tex = src_sampler_view->texture;
assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
filter == PIPE_TEX_MIPFILTER_LINEAR);
assert(tex);
assert(tex->width0 != 0);
assert(tex->height0 != 0);
s0 = (float) srcX0;
s1 = (float) srcX1;
t0 = (float) srcY0;
t1 = (float) srcY1;
if(normalized)
{
/* normalize according to the mipmap level's size */
int level = src_sampler_view->u.tex.first_level;
float w = (float) u_minify(tex->width0, level);
float h = (float) u_minify(tex->height0, level);
s0 /= w;
s1 /= w;
t0 /= h;
t1 /= h;
}
assert(ctx->pipe->screen->is_format_supported(ctx->pipe->screen, dst->format,
PIPE_TEXTURE_2D,
dst->texture->nr_samples,
PIPE_BIND_RENDER_TARGET));
/* save state (restored below) */
cso_save_blend(ctx->cso);
cso_save_depth_stencil_alpha(ctx->cso);
cso_save_rasterizer(ctx->cso);
cso_save_sample_mask(ctx->cso);
cso_save_samplers(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_save_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_save_stream_outputs(ctx->cso);
cso_save_viewport(ctx->cso);
cso_save_framebuffer(ctx->cso);
cso_save_fragment_shader(ctx->cso);
cso_save_vertex_shader(ctx->cso);
cso_save_geometry_shader(ctx->cso);
cso_save_vertex_elements(ctx->cso);
cso_save_aux_vertex_buffer_slot(ctx->cso);
/* set misc state we care about */
cso_set_blend(ctx->cso, &ctx->blend_write_color);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_keep_depthstencil);
cso_set_sample_mask(ctx->cso, ~0);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
cso_set_stream_outputs(ctx->cso, 0, NULL, 0);
/* sampler */
ctx->sampler.normalized_coords = normalized;
ctx->sampler.min_img_filter = filter;
ctx->sampler.mag_img_filter = filter;
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler);
cso_single_sampler_done(ctx->cso, PIPE_SHADER_FRAGMENT);
/* viewport */
ctx->viewport.scale[0] = 0.5f * dst->width;
ctx->viewport.scale[1] = 0.5f * dst->height;
ctx->viewport.scale[2] = 0.5f;
ctx->viewport.scale[3] = 1.0f;
ctx->viewport.translate[0] = 0.5f * dst->width;
ctx->viewport.translate[1] = 0.5f * dst->height;
ctx->viewport.translate[2] = 0.5f;
ctx->viewport.translate[3] = 0.0f;
cso_set_viewport(ctx->cso, &ctx->viewport);
/* texture */
cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, 1, &src_sampler_view);
/* shaders */
set_fragment_shader(ctx, TGSI_WRITEMASK_XYZW,
src_sampler_view->texture->target);
set_vertex_shader(ctx);
cso_set_geometry_shader_handle(ctx->cso, NULL);
/* drawing dest */
memset(&fb, 0, sizeof(fb));
fb.width = dst->width;
fb.height = dst->height;
fb.nr_cbufs = 1;
fb.cbufs[0] = dst;
cso_set_framebuffer(ctx->cso, &fb);
/* draw quad */
offset = setup_vertex_data_tex(ctx,
src_sampler_view->texture->target,
src_face,
(float) dstX0 / dst->width * 2.0f - 1.0f,
(float) dstY0 / dst->height * 2.0f - 1.0f,
(float) dstX1 / dst->width * 2.0f - 1.0f,
(float) dstY1 / dst->height * 2.0f - 1.0f,
s0, t0, s1, t1,
z);
util_draw_vertex_buffer(ctx->pipe, ctx->cso, ctx->vbuf,
cso_get_aux_vertex_buffer_slot(ctx->cso),
offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
2); /* attribs/vert */
/* restore state we changed */
cso_restore_blend(ctx->cso);
cso_restore_depth_stencil_alpha(ctx->cso);
cso_restore_rasterizer(ctx->cso);
cso_restore_sample_mask(ctx->cso);
cso_restore_samplers(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_restore_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_restore_viewport(ctx->cso);
cso_restore_framebuffer(ctx->cso);
cso_restore_fragment_shader(ctx->cso);
cso_restore_vertex_shader(ctx->cso);
cso_restore_geometry_shader(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
cso_restore_aux_vertex_buffer_slot(ctx->cso);
cso_restore_stream_outputs(ctx->cso);
}
/**
* Render a glBitmap by drawing a textured quad
*/
static void
draw_bitmap_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
GLsizei width, GLsizei height,
struct pipe_sampler_view *sv,
const GLfloat *color)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct cso_context *cso = st->cso_context;
struct st_fp_variant *fpv;
struct st_fp_variant_key key;
GLuint maxSize;
GLuint offset;
struct pipe_resource *vbuf = NULL;
memset(&key, 0, sizeof(key));
key.st = st;
key.bitmap = GL_TRUE;
key.clamp_color = st->clamp_frag_color_in_shader &&
st->ctx->Color._ClampFragmentColor &&
!st->ctx->DrawBuffer->_IntegerColor;
fpv = st_get_fp_variant(st, st->fp, &key);
/* As an optimization, Mesa's fragment programs will sometimes get the
* primary color from a statevar/constant rather than a varying variable.
* when that's the case, we need to ensure that we use the 'color'
* parameter and not the current attribute color (which may have changed
* through glRasterPos and state validation.
* So, we force the proper color here. Not elegant, but it works.
*/
{
GLfloat colorSave[4];
COPY_4V(colorSave, ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], color);
st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], colorSave);
}
/* limit checks */
/* XXX if the bitmap is larger than the max texture size, break
* it up into chunks.
*/
maxSize = 1 << (pipe->screen->get_param(pipe->screen,
PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
assert(width <= (GLsizei)maxSize);
assert(height <= (GLsizei)maxSize);
cso_save_rasterizer(cso);
cso_save_samplers(cso, PIPE_SHADER_FRAGMENT);
cso_save_sampler_views(cso, PIPE_SHADER_FRAGMENT);
cso_save_viewport(cso);
cso_save_fragment_shader(cso);
cso_save_stream_outputs(cso);
cso_save_vertex_shader(cso);
cso_save_geometry_shader(cso);
cso_save_vertex_elements(cso);
cso_save_aux_vertex_buffer_slot(cso);
/* rasterizer state: just scissor */
st->bitmap.rasterizer.scissor = ctx->Scissor.Enabled;
cso_set_rasterizer(cso, &st->bitmap.rasterizer);
/* fragment shader state: TEX lookup program */
cso_set_fragment_shader_handle(cso, fpv->driver_shader);
/* vertex shader state: position + texcoord pass-through */
cso_set_vertex_shader_handle(cso, st->bitmap.vs);
/* geometry shader state: disabled */
cso_set_geometry_shader_handle(cso, NULL);
/* user samplers, plus our bitmap sampler */
{
struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
uint num = MAX2(fpv->bitmap_sampler + 1,
st->state.num_samplers[PIPE_SHADER_FRAGMENT]);
uint i;
for (i = 0; i < st->state.num_samplers[PIPE_SHADER_FRAGMENT]; i++) {
samplers[i] = &st->state.samplers[PIPE_SHADER_FRAGMENT][i];
}
samplers[fpv->bitmap_sampler] =
&st->bitmap.samplers[sv->texture->target != PIPE_TEXTURE_RECT];
cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num,
(const struct pipe_sampler_state **) samplers);
}
/* user textures, plus the bitmap texture */
{
struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
uint num = MAX2(fpv->bitmap_sampler + 1,
st->state.num_sampler_views[PIPE_SHADER_FRAGMENT]);
memcpy(sampler_views, st->state.sampler_views[PIPE_SHADER_FRAGMENT],
sizeof(sampler_views));
sampler_views[fpv->bitmap_sampler] = sv;
cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, num, sampler_views);
}
/* viewport state: viewport matching window dims */
{
const GLboolean invert = st->state.fb_orientation == Y_0_TOP;
const GLfloat width = (GLfloat)st->state.framebuffer.width;
const GLfloat height = (GLfloat)st->state.framebuffer.height;
struct pipe_viewport_state vp;
vp.scale[0] = 0.5f * width;
vp.scale[1] = height * (invert ? -0.5f : 0.5f);
vp.scale[2] = 0.5f;
vp.scale[3] = 1.0f;
vp.translate[0] = 0.5f * width;
vp.translate[1] = 0.5f * height;
vp.translate[2] = 0.5f;
vp.translate[3] = 0.0f;
cso_set_viewport(cso, &vp);
}
cso_set_vertex_elements(cso, 3, st->velems_util_draw);
cso_set_stream_outputs(st->cso_context, 0, NULL, 0);
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
z = z * 2.0f - 1.0f;
/* draw textured quad */
setup_bitmap_vertex_data(st, sv->texture->target != PIPE_TEXTURE_RECT,
x, y, width, height, z, color, &vbuf, &offset);
if (vbuf) {
util_draw_vertex_buffer(pipe, st->cso_context, vbuf,
cso_get_aux_vertex_buffer_slot(st->cso_context),
offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
3); /* attribs/vert */
}
/* restore state */
cso_restore_rasterizer(cso);
cso_restore_samplers(cso, PIPE_SHADER_FRAGMENT);
cso_restore_sampler_views(cso, PIPE_SHADER_FRAGMENT);
cso_restore_viewport(cso);
cso_restore_fragment_shader(cso);
cso_restore_vertex_shader(cso);
cso_restore_geometry_shader(cso);
cso_restore_vertex_elements(cso);
cso_restore_aux_vertex_buffer_slot(cso);
cso_restore_stream_outputs(cso);
pipe_resource_reference(&vbuf, NULL);
}
