static void
update_tep( struct st_context *st )
{
struct st_tesseval_program *sttep;
if (!st->ctx->TessEvalProgram._Current) {
cso_set_tesseval_shader_handle(st->cso_context, NULL);
st_reference_tesseprog(st, &st->tep, NULL);
return;
}
sttep = st_tesseval_program(st->ctx->TessEvalProgram._Current);
assert(sttep->Base.Base.Target == GL_TESS_EVALUATION_PROGRAM_NV);
st->tep_variant = st_get_basic_variant(st, PIPE_SHADER_TESS_EVAL,
&sttep->tgsi, &sttep->variants);
st_reference_tesseprog(st, &st->tep, sttep);
cso_set_tesseval_shader_handle(st->cso_context,
st->tep_variant->driver_shader);
}
/**
* Setup pipeline state prior to rendering the bitmap textured quad.
*/
static void
setup_render_state(struct gl_context *ctx,
struct pipe_sampler_view *sv,
const GLfloat *color,
bool atlas)
{
struct st_context *st = st_context(ctx);
struct cso_context *cso = st->cso_context;
struct st_fp_variant *fpv;
struct st_fp_variant_key key;
memset(&key, 0, sizeof(key));
key.st = st->has_shareable_shaders ? NULL : st;
key.bitmap = GL_TRUE;
key.clamp_color = st->clamp_frag_color_in_shader &&
ctx->Color._ClampFragmentColor;
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, st->fp->Base.Base.Parameters,
PIPE_SHADER_FRAGMENT);
COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], colorSave);
}
cso_save_state(cso, (CSO_BIT_RASTERIZER |
CSO_BIT_FRAGMENT_SAMPLERS |
CSO_BIT_FRAGMENT_SAMPLER_VIEWS |
CSO_BIT_VIEWPORT |
CSO_BIT_STREAM_OUTPUTS |
CSO_BIT_VERTEX_ELEMENTS |
CSO_BIT_AUX_VERTEX_BUFFER_SLOT |
CSO_BITS_ALL_SHADERS));
/* rasterizer state: just scissor */
st->bitmap.rasterizer.scissor = ctx->Scissor.EnableFlags & 1;
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);
/* disable other shaders */
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
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];
}
if (atlas)
samplers[fpv->bitmap_sampler] = &st->bitmap.atlas_sampler;
else
samplers[fpv->bitmap_sampler] = &st->bitmap.sampler;
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 */
cso_set_viewport_dims(cso, st->state.framebuffer.width,
st->state.framebuffer.height,
st->state.fb_orientation == Y_0_TOP);
cso_set_vertex_elements(cso, 3, st->util_velems);
cso_set_stream_outputs(st->cso_context, 0, NULL, NULL);
}
/**
* 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_FILTER_NEAREST ||
filter == PIPE_TEX_FILTER_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_state(ctx->cso, (CSO_BIT_BLEND |
CSO_BIT_DEPTH_STENCIL_ALPHA |
CSO_BIT_RASTERIZER |
CSO_BIT_SAMPLE_MASK |
CSO_BIT_MIN_SAMPLES |
CSO_BIT_FRAGMENT_SAMPLERS |
CSO_BIT_FRAGMENT_SAMPLER_VIEWS |
CSO_BIT_STREAM_OUTPUTS |
CSO_BIT_VIEWPORT |
CSO_BIT_FRAMEBUFFER |
CSO_BIT_PAUSE_QUERIES |
CSO_BIT_FRAGMENT_SHADER |
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));
/* 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_min_samples(ctx->cso, 1);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
cso_set_stream_outputs(ctx->cso, 0, NULL, NULL);
/* sampler */
ctx->sampler.normalized_coords = normalized;
ctx->sampler.min_img_filter = filter;
ctx->sampler.mag_img_filter = filter;
{
const struct pipe_sampler_state *samplers[] = {&ctx->sampler};
cso_set_samplers(ctx->cso, PIPE_SHADER_FRAGMENT, 1, samplers);
}
/* 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.translate[0] = 0.5f * dst->width;
ctx->viewport.translate[1] = 0.5f * dst->height;
ctx->viewport.translate[2] = 0.5f;
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->format,
src_sampler_view->texture->target);
set_vertex_shader(ctx);
cso_set_tessctrl_shader_handle(ctx->cso, NULL);
cso_set_tesseval_shader_handle(ctx->cso, NULL);
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_state(ctx->cso);
}
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);
}
/**
* 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;
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_tessctrl_shader(cso);
cso_save_tesseval_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.EnableFlags & 1;
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);
/* disable other shaders */
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
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.translate[0] = 0.5f * width;
vp.translate[1] = 0.5f * height;
vp.translate[2] = 0.5f;
cso_set_viewport(cso, &vp);
}
cso_set_vertex_elements(cso, 3, st->velems_util_draw);
cso_set_stream_outputs(st->cso_context, 0, NULL, NULL);
/* 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_tessctrl_shader(cso);
cso_restore_tesseval_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);
}
/**
* Main run function of the PP queue. Called on swapbuffers/flush.
*
* Runs all requested filters in order and handles shuffling the temp
* buffers in between.
*/
void
pp_run(struct pp_queue_t *ppq, struct pipe_resource *in,
struct pipe_resource *out, struct pipe_resource *indepth)
{
struct pipe_resource *refin = NULL, *refout = NULL;
unsigned int i;
struct cso_context *cso = ppq->p->cso;
if (ppq->n_filters == 0)
return;
assert(ppq->pp_queue);
assert(ppq->tmp[0]);
if (in->width0 != ppq->p->framebuffer.width ||
in->height0 != ppq->p->framebuffer.height) {
pp_debug("Resizing the temp pp buffers\n");
pp_free_fbos(ppq);
pp_init_fbos(ppq, in->width0, in->height0);
}
if (in == out && ppq->n_filters == 1) {
/* Make a copy of in to tmp[0] in this case. */
unsigned int w = ppq->p->framebuffer.width;
unsigned int h = ppq->p->framebuffer.height;
pp_blit(ppq->p->pipe, in, 0, 0,
w, h, 0, ppq->tmps[0],
0, 0, w, h);
in = ppq->tmp[0];
}
/* save state (restored below) */
cso_save_state(cso, (CSO_BIT_BLEND |
CSO_BIT_DEPTH_STENCIL_ALPHA |
CSO_BIT_FRAGMENT_SHADER |
CSO_BIT_FRAMEBUFFER |
CSO_BIT_TESSCTRL_SHADER |
CSO_BIT_TESSEVAL_SHADER |
CSO_BIT_GEOMETRY_SHADER |
CSO_BIT_RASTERIZER |
CSO_BIT_SAMPLE_MASK |
CSO_BIT_MIN_SAMPLES |
CSO_BIT_FRAGMENT_SAMPLERS |
CSO_BIT_FRAGMENT_SAMPLER_VIEWS |
CSO_BIT_STENCIL_REF |
CSO_BIT_STREAM_OUTPUTS |
CSO_BIT_VERTEX_ELEMENTS |
CSO_BIT_VERTEX_SHADER |
CSO_BIT_VIEWPORT |
CSO_BIT_AUX_VERTEX_BUFFER_SLOT |
CSO_BIT_PAUSE_QUERIES |
CSO_BIT_RENDER_CONDITION));
cso_save_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
cso_save_constant_buffer_slot0(cso, PIPE_SHADER_FRAGMENT);
/* set default state */
cso_set_sample_mask(cso, ~0);
cso_set_min_samples(cso, 1);
cso_set_stream_outputs(cso, 0, NULL, NULL);
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
cso_set_geometry_shader_handle(cso, NULL);
cso_set_render_condition(cso, NULL, FALSE, 0);
// Kept only for this frame.
pipe_resource_reference(&ppq->depth, indepth);
pipe_resource_reference(&refin, in);
pipe_resource_reference(&refout, out);
switch (ppq->n_filters) {
case 0:
/* Failsafe, but never reached. */
break;
case 1: /* No temp buf */
ppq->pp_queue[0] (ppq, in, out, 0);
break;
case 2: /* One temp buf */
ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
ppq->pp_queue[1] (ppq, ppq->tmp[0], out, 1);
break;
default: /* Two temp bufs */
assert(ppq->tmp[1]);
ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
for (i = 1; i < (ppq->n_filters - 1); i++) {
if (i % 2 == 0)
ppq->pp_queue[i] (ppq, ppq->tmp[1], ppq->tmp[0], i);
else
ppq->pp_queue[i] (ppq, ppq->tmp[0], ppq->tmp[1], i);
}
if (i % 2 == 0)
ppq->pp_queue[i] (ppq, ppq->tmp[1], out, i);
else
ppq->pp_queue[i] (ppq, ppq->tmp[0], out, i);
break;
}
/* restore state we changed */
cso_restore_state(cso);
cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_VERTEX);
cso_restore_constant_buffer_slot0(cso, PIPE_SHADER_FRAGMENT);
pipe_resource_reference(&ppq->depth, NULL);
pipe_resource_reference(&refin, NULL);
pipe_resource_reference(&refout, NULL);
}
/* 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 = {0};
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.stride = 2 * sizeof(float);
u_upload_alloc(st->pipe->stream_uploader, 0, 8 * sizeof(float), 4,
&vbo.buffer_offset, &vbo.buffer.resource, (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->pipe->stream_uploader);
velem.src_offset = 0;
velem.instance_divisor = 0;
velem.vertex_buffer_index = 0;
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.resource, NULL);
}
/* Upload constants */
{
struct pipe_constant_buffer cb;
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;
}
/**
* Do glClear by drawing a quadrilateral.
* The vertices of the quad will be computed from the
* ctx->DrawBuffer->_X/Ymin/max fields.
*/
static void
clear_with_quad(struct gl_context *ctx, unsigned clear_buffers)
{
struct st_context *st = st_context(ctx);
struct cso_context *cso = st->cso_context;
const struct gl_framebuffer *fb = ctx->DrawBuffer;
const GLfloat fb_width = (GLfloat) fb->Width;
const GLfloat fb_height = (GLfloat) fb->Height;
const GLfloat x0 = (GLfloat) ctx->DrawBuffer->_Xmin / fb_width * 2.0f - 1.0f;
const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax / fb_width * 2.0f - 1.0f;
const GLfloat y0 = (GLfloat) ctx->DrawBuffer->_Ymin / fb_height * 2.0f - 1.0f;
const GLfloat y1 = (GLfloat) ctx->DrawBuffer->_Ymax / fb_height * 2.0f - 1.0f;
unsigned num_layers =
util_framebuffer_get_num_layers(&st->state.framebuffer);
/*
printf("%s %s%s%s %f,%f %f,%f\n", __func__,
color ? "color, " : "",
depth ? "depth, " : "",
stencil ? "stencil" : "",
x0, y0,
x1, y1);
*/
cso_save_state(cso, (CSO_BIT_BLEND |
CSO_BIT_STENCIL_REF |
CSO_BIT_DEPTH_STENCIL_ALPHA |
CSO_BIT_RASTERIZER |
CSO_BIT_SAMPLE_MASK |
CSO_BIT_MIN_SAMPLES |
CSO_BIT_VIEWPORT |
CSO_BIT_STREAM_OUTPUTS |
CSO_BIT_VERTEX_ELEMENTS |
CSO_BIT_AUX_VERTEX_BUFFER_SLOT |
CSO_BIT_PAUSE_QUERIES |
CSO_BITS_ALL_SHADERS));
/* blend state: RGBA masking */
{
struct pipe_blend_state blend;
memset(&blend, 0, sizeof(blend));
if (clear_buffers & PIPE_CLEAR_COLOR) {
int num_buffers = ctx->Extensions.EXT_draw_buffers2 ?
ctx->DrawBuffer->_NumColorDrawBuffers : 1;
int i;
blend.independent_blend_enable = num_buffers > 1;
for (i = 0; i < num_buffers; i++) {
if (!(clear_buffers & (PIPE_CLEAR_COLOR0 << i)))
continue;
if (ctx->Color.ColorMask[i][0])
blend.rt[i].colormask |= PIPE_MASK_R;
if (ctx->Color.ColorMask[i][1])
blend.rt[i].colormask |= PIPE_MASK_G;
if (ctx->Color.ColorMask[i][2])
blend.rt[i].colormask |= PIPE_MASK_B;
if (ctx->Color.ColorMask[i][3])
blend.rt[i].colormask |= PIPE_MASK_A;
}
if (ctx->Color.DitherFlag)
blend.dither = 1;
}
cso_set_blend(cso, &blend);
}
/* depth_stencil state: always pass/set to ref value */
{
struct pipe_depth_stencil_alpha_state depth_stencil;
memset(&depth_stencil, 0, sizeof(depth_stencil));
if (clear_buffers & PIPE_CLEAR_DEPTH) {
depth_stencil.depth.enabled = 1;
depth_stencil.depth.writemask = 1;
depth_stencil.depth.func = PIPE_FUNC_ALWAYS;
}
if (clear_buffers & PIPE_CLEAR_STENCIL) {
struct pipe_stencil_ref stencil_ref;
memset(&stencil_ref, 0, sizeof(stencil_ref));
depth_stencil.stencil[0].enabled = 1;
depth_stencil.stencil[0].func = PIPE_FUNC_ALWAYS;
depth_stencil.stencil[0].fail_op = PIPE_STENCIL_OP_REPLACE;
depth_stencil.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
depth_stencil.stencil[0].zfail_op = PIPE_STENCIL_OP_REPLACE;
depth_stencil.stencil[0].valuemask = 0xff;
depth_stencil.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;
stencil_ref.ref_value[0] = ctx->Stencil.Clear;
cso_set_stencil_ref(cso, &stencil_ref);
}
cso_set_depth_stencil_alpha(cso, &depth_stencil);
}
cso_set_vertex_elements(cso, 2, st->util_velems);
cso_set_stream_outputs(cso, 0, NULL, NULL);
cso_set_sample_mask(cso, ~0);
cso_set_min_samples(cso, 1);
cso_set_rasterizer(cso, &st->clear.raster);
/* viewport state: viewport matching window dims */
cso_set_viewport_dims(st->cso_context, fb_width, fb_height,
st_fb_orientation(fb) == Y_0_TOP);
set_fragment_shader(st);
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
if (num_layers > 1)
set_vertex_shader_layered(st);
else
set_vertex_shader(st);
/* draw quad matching scissor rect.
*
* Note: if we're only clearing depth/stencil we still setup vertices
* with color, but they'll be ignored.
*
* We can't translate the clear color to the colorbuffer format,
* because different colorbuffers may have different formats.
*/
if (!st_draw_quad(st, x0, y0, x1, y1,
ctx->Depth.Clear * 2.0f - 1.0f,
0.0f, 0.0f, 0.0f, 0.0f,
(const float *) &ctx->Color.ClearColor.f,
num_layers)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glClear");
}
/* Restore pipe state */
cso_restore_state(cso);
}