static void st_dispatch_compute_common(struct gl_context *ctx,
const GLuint *num_groups,
const GLuint *group_size,
struct pipe_resource *indirect,
GLintptr indirect_offset)
{
struct gl_shader_program *prog =
ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct pipe_grid_info info = { 0 };
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(st);
if (ctx->NewState)
_mesa_update_state(ctx);
if ((st->dirty | ctx->NewDriverState) & ST_PIPELINE_COMPUTE_STATE_MASK ||
st->compute_shader_may_be_dirty)
st_validate_state(st, ST_PIPELINE_COMPUTE);
for (unsigned i = 0; i < 3; i++) {
info.block[i] = group_size ? group_size[i] : prog->Comp.LocalSize[i];
info.grid[i] = num_groups ? num_groups[i] : 0;
}
if (indirect) {
info.indirect = indirect;
info.indirect_offset = indirect_offset;
}
pipe->launch_grid(pipe, &info);
}
/**
* Try to accumulate this glBitmap call in the bitmap cache.
* \return GL_TRUE for success, GL_FALSE if bitmap is too large, etc.
*/
static GLboolean
accum_bitmap(struct st_context *st,
GLint x, GLint y, GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap )
{
struct bitmap_cache *cache = st->bitmap.cache;
int px = -999, py = -999;
const GLfloat z = st->ctx->Current.RasterPos[2];
if (width > BITMAP_CACHE_WIDTH ||
height > BITMAP_CACHE_HEIGHT)
return GL_FALSE; /* too big to cache */
if (!cache->empty) {
px = x - cache->xpos; /* pos in buffer */
py = y - cache->ypos;
if (px < 0 || px + width > BITMAP_CACHE_WIDTH ||
py < 0 || py + height > BITMAP_CACHE_HEIGHT ||
!TEST_EQ_4V(st->ctx->Current.RasterColor, cache->color) ||
((fabs(z - cache->zpos) > Z_EPSILON))) {
/* This bitmap would extend beyond cache bounds, or the bitmap
* color is changing
* so flush and continue.
*/
st_flush_bitmap_cache(st);
}
}
if (cache->empty) {
/* Initialize. Center bitmap vertically in the buffer. */
px = 0;
py = (BITMAP_CACHE_HEIGHT - height) / 2;
cache->xpos = x;
cache->ypos = y - py;
cache->zpos = z;
cache->empty = GL_FALSE;
COPY_4FV(cache->color, st->ctx->Current.RasterColor);
}
assert(px != -999);
assert(py != -999);
if (x < cache->xmin)
cache->xmin = x;
if (y < cache->ymin)
cache->ymin = y;
if (x + width > cache->xmax)
cache->xmax = x + width;
if (y + height > cache->ymax)
cache->ymax = y + height;
/* create the transfer if needed */
create_cache_trans(st);
unpack_bitmap(st, px, py, width, height, unpack, bitmap,
cache->buffer, BITMAP_CACHE_WIDTH);
return GL_TRUE; /* accumulated */
}
/**
* Called via ctx->Driver.BeginConditionalRender()
*/
static void
st_BeginConditionalRender(struct gl_context *ctx, struct gl_query_object *q,
GLenum mode)
{
struct st_query_object *stq = st_query_object(q);
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
uint m;
st_flush_bitmap_cache(st);
switch (mode) {
case GL_QUERY_WAIT:
m = PIPE_RENDER_COND_WAIT;
break;
case GL_QUERY_NO_WAIT:
m = PIPE_RENDER_COND_NO_WAIT;
break;
case GL_QUERY_BY_REGION_WAIT:
m = PIPE_RENDER_COND_BY_REGION_WAIT;
break;
case GL_QUERY_BY_REGION_NO_WAIT:
m = PIPE_RENDER_COND_BY_REGION_NO_WAIT;
break;
default:
assert(0 && "bad mode in st_BeginConditionalRender");
m = PIPE_RENDER_COND_WAIT;
}
st->render_condition = stq->pq;
st->condition_mode = m;
pipe->render_condition(pipe, stq->pq, m);
}
/**
* Flush bitmap cache and release vertex buffer.
*/
void
st_flush_bitmap( struct st_context *st )
{
st_flush_bitmap_cache(st);
/* Release vertex buffer to avoid synchronous rendering if we were
* to map it in the next frame.
*/
pipe_resource_reference(&st->bitmap.vbuf, NULL);
st->bitmap.vbuf_slot = 0;
}
void st_flush(struct st_context *st,
struct pipe_fence_handle **fence,
enum pipe_flush_flags flags)
{
FLUSH_VERTICES(st->ctx, 0);
FLUSH_CURRENT(st->ctx, 0);
st_flush_bitmap_cache(st);
st->pipe->flush(st->pipe, fence, flags);
}
/**
* Called via ctx->Driver.BeginConditionalRender()
*/
static void
st_EndConditionalRender(struct gl_context *ctx, struct gl_query_object *q)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
(void) q;
st_flush_bitmap_cache(st);
pipe->render_condition(pipe, NULL, 0);
st->render_condition = NULL;
}
static void
st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
{
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_query_object *stq = st_query_object(q);
st_flush_bitmap_cache(st_context(ctx));
if (q->Target == GL_TIMESTAMP && !stq->pq) {
stq->pq = pipe->create_query(pipe, PIPE_QUERY_TIMESTAMP);
stq->type = PIPE_QUERY_TIMESTAMP;
}
pipe->end_query(pipe, stq->pq);
}
static void
st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
{
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_query_object *stq = st_query_object(q);
unsigned type;
st_flush_bitmap_cache(st_context(ctx));
/* convert GL query type to Gallium query type */
switch (q->Target) {
case GL_ANY_SAMPLES_PASSED:
/* fall-through */
case GL_SAMPLES_PASSED_ARB:
type = PIPE_QUERY_OCCLUSION_COUNTER;
break;
case GL_PRIMITIVES_GENERATED:
type = PIPE_QUERY_PRIMITIVES_GENERATED;
break;
case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
type = PIPE_QUERY_PRIMITIVES_EMITTED;
break;
case GL_TIME_ELAPSED_EXT:
type = PIPE_QUERY_TIME_ELAPSED;
break;
default:
assert(0 && "unexpected query target in st_BeginQuery()");
return;
}
if (stq->pq && stq->type != type) {
/* free old query of different type */
pipe->destroy_query(pipe, stq->pq);
stq->pq = NULL;
stq->type = PIPE_QUERY_TYPES; /* an invalid value */
}
if (!stq->pq) {
stq->pq = pipe->create_query(pipe, type);
stq->type = type;
}
assert(stq->type == type);
pipe->begin_query(pipe, stq->pq);
}
static void
st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
{
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_query_object *stq = st_query_object(q);
bool ret = false;
st_flush_bitmap_cache(st_context(ctx));
if ((q->Target == GL_TIMESTAMP ||
q->Target == GL_TIME_ELAPSED) &&
!stq->pq) {
stq->pq = pipe->create_query(pipe, PIPE_QUERY_TIMESTAMP, 0);
stq->type = PIPE_QUERY_TIMESTAMP;
}
if (stq->pq)
ret = pipe->end_query(pipe, stq->pq);
if (!ret) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glEndQuery");
return;
}
}
static void
st_BlitFramebuffer(struct gl_context *ctx,
struct gl_framebuffer *readFB,
struct gl_framebuffer *drawFB,
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 {
GLint srcX0, srcY0, srcX1, srcY1;
GLint dstX0, dstY0, dstX1, dstY1;
} clip;
struct pipe_blit_info blit;
st_manager_validate_framebuffers(st);
/* Make sure bitmap rendering has landed in the framebuffers */
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(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, readFB, drawFB,
&clip.srcX0, &clip.srcY0, &clip.srcX1, &clip.srcY1,
&clip.dstX0, &clip.dstY0, &clip.dstX1, &clip.dstY1)) {
return; /* nothing to draw/blit */
}
memset(&blit, 0, sizeof(struct pipe_blit_info));
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;
}
if (drawFB != ctx->WinSysDrawBuffer)
st_window_rectangles_to_blit(ctx, &blit);
blit.filter = pFilter;
blit.render_condition_enable = TRUE;
blit.alpha_blend = FALSE;
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 = dstSurf->format;
blit.src.resource = srcObj->pt;
blit.src.level = srcAtt->TextureLevel;
blit.src.box.z = srcAtt->Zoffset + srcAtt->CubeMapFace;
blit.src.format = srcObj->pt->format;
st_adjust_blit_for_srgb(&blit, ctx->Color.sRGBEnabled);
st->pipe->blit(st->pipe, &blit);
dstRb->defined = true; /* front buffer tracking */
}
}
}
}
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 = 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 = srcSurf->format;
st_adjust_blit_for_srgb(&blit, ctx->Color.sRGBEnabled);
st->pipe->blit(st->pipe, &blit);
dstRb->defined = true; /* front buffer tracking */
}
}
}
}
}
if (mask & depthStencil) {
/* depth and/or stencil blit */
/* get src/dst depth surfaces */
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 (_mesa_has_depthstencil_combined(readFB) &&
_mesa_has_depthstencil_combined(drawFB)) {
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);
}
}
}
}
static void
st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_query_object *stq = st_query_object(q);
unsigned type;
st_flush_bitmap_cache(st_context(ctx));
/* convert GL query type to Gallium query type */
switch (q->Target) {
case GL_ANY_SAMPLES_PASSED:
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
/* fall-through */
case GL_SAMPLES_PASSED_ARB:
type = PIPE_QUERY_OCCLUSION_COUNTER;
break;
case GL_PRIMITIVES_GENERATED:
type = PIPE_QUERY_PRIMITIVES_GENERATED;
break;
case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
type = PIPE_QUERY_PRIMITIVES_EMITTED;
break;
case GL_TIME_ELAPSED:
if (st->has_time_elapsed)
type = PIPE_QUERY_TIME_ELAPSED;
else
type = PIPE_QUERY_TIMESTAMP;
break;
default:
assert(0 && "unexpected query target in st_BeginQuery()");
return;
}
if (stq->type != type) {
/* free old query of different type */
if (stq->pq) {
pipe->destroy_query(pipe, stq->pq);
stq->pq = NULL;
}
if (stq->pq_begin) {
pipe->destroy_query(pipe, stq->pq_begin);
stq->pq_begin = NULL;
}
stq->type = PIPE_QUERY_TYPES; /* an invalid value */
}
if (q->Target == GL_TIME_ELAPSED &&
type == PIPE_QUERY_TIMESTAMP) {
/* Determine time elapsed by emitting two timestamp queries. */
if (!stq->pq_begin) {
stq->pq_begin = pipe->create_query(pipe, type);
stq->type = type;
}
pipe->end_query(pipe, stq->pq_begin);
} else {
if (!stq->pq) {
stq->pq = pipe->create_query(pipe, type);
stq->type = type;
}
pipe->begin_query(pipe, stq->pq);
}
assert(stq->type == type);
}
void st_validate_state( struct st_context *st )
{
struct st_state_flags *state = &st->dirty;
GLuint i;
/* Get Mesa driver state. */
st->dirty.st |= st->ctx->NewDriverState;
st->ctx->NewDriverState = 0;
check_attrib_edgeflag(st);
if (state->mesa)
st_flush_bitmap_cache(st);
check_program_state( st );
st_manager_validate_framebuffers(st);
if (state->st == 0)
return;
/*printf("%s %x/%x\n", __FUNCTION__, state->mesa, state->st);*/
#ifdef DEBUG
if (1) {
#else
if (0) {
#endif
/* Debug version which enforces various sanity checks on the
* state flags which are generated and checked to help ensure
* state atoms are ordered correctly in the list.
*/
struct st_state_flags examined, prev;
memset(&examined, 0, sizeof(examined));
prev = *state;
for (i = 0; i < ARRAY_SIZE(atoms); i++) {
const struct st_tracked_state *atom = atoms[i];
struct st_state_flags generated;
/*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
if (!(atom->dirty.mesa || atom->dirty.st) ||
!atom->update) {
printf("malformed atom %s\n", atom->name);
assert(0);
}
if (check_state(state, &atom->dirty)) {
atoms[i]->update( st );
/*printf("after: %x\n", atom->dirty.mesa);*/
}
accumulate_state(&examined, &atom->dirty);
/* generated = (prev ^ state)
* if (examined & generated)
* fail;
*/
xor_states(&generated, &prev, state);
assert(!check_state(&examined, &generated));
prev = *state;
}
/*printf("\n");*/
}
else {
for (i = 0; i < ARRAY_SIZE(atoms); i++) {
if (check_state(state, &atoms[i]->dirty))
atoms[i]->update( st );
}
}
memset(state, 0, sizeof(*state));
}
/**
* 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;
}
/**
* Update framebuffer state (color, depth, stencil, etc. buffers)
*/
void
st_update_framebuffer_state( struct st_context *st )
{
struct pipe_framebuffer_state framebuffer;
struct gl_framebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb;
GLuint i;
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(st);
st->state.fb_orientation = st_fb_orientation(fb);
/**
* Quantize the derived default number of samples:
*
* A query to the driver of supported MSAA values the
* hardware supports is done as to legalize the number
* of application requested samples, NumSamples.
* See commit eb9cf3c for more information.
*/
fb->DefaultGeometry._NumSamples =
framebuffer_quantize_num_samples(st, fb->DefaultGeometry.NumSamples);
framebuffer.width = _mesa_geometric_width(fb);
framebuffer.height = _mesa_geometric_height(fb);
framebuffer.samples = _mesa_geometric_samples(fb);
framebuffer.layers = _mesa_geometric_layers(fb);
/* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
* to determine which surfaces to draw to
*/
framebuffer.nr_cbufs = fb->_NumColorDrawBuffers;
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
framebuffer.cbufs[i] = NULL;
strb = st_renderbuffer(fb->_ColorDrawBuffers[i]);
if (strb) {
if (strb->is_rtt || (strb->texture &&
_mesa_get_format_color_encoding(strb->Base.Format) == GL_SRGB)) {
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
if (strb->surface) {
framebuffer.cbufs[i] = strb->surface;
update_framebuffer_size(&framebuffer, strb->surface);
}
strb->defined = GL_TRUE; /* we'll be drawing something */
}
}
for (i = framebuffer.nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) {
framebuffer.cbufs[i] = NULL;
}
/* Remove trailing GL_NONE draw buffers. */
while (framebuffer.nr_cbufs &&
!framebuffer.cbufs[framebuffer.nr_cbufs-1]) {
framebuffer.nr_cbufs--;
}
/*
* Depth/Stencil renderbuffer/surface.
*/
strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
if (!strb)
strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
if (strb) {
if (strb->is_rtt) {
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
framebuffer.zsbuf = strb->surface;
update_framebuffer_size(&framebuffer, strb->surface);
}
else
framebuffer.zsbuf = NULL;
#ifdef DEBUG
/* Make sure the resource binding flags were set properly */
for (i = 0; i < framebuffer.nr_cbufs; i++) {
assert(!framebuffer.cbufs[i] ||
framebuffer.cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET);
}
if (framebuffer.zsbuf) {
assert(framebuffer.zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL);
}
#endif
if (framebuffer.width == USHRT_MAX)
framebuffer.width = 0;
if (framebuffer.height == USHRT_MAX)
framebuffer.height = 0;
cso_set_framebuffer(st->cso_context, &framebuffer);
st->state.fb_width = framebuffer.width;
st->state.fb_height = framebuffer.height;
st->state.fb_num_samples = util_framebuffer_get_num_samples(&framebuffer);
st->state.fb_num_layers = util_framebuffer_get_num_layers(&framebuffer);
st->state.fb_num_cb = framebuffer.nr_cbufs;
}
/**
* Update framebuffer state (color, depth, stencil, etc. buffers)
*/
static void
update_framebuffer_state( struct st_context *st )
{
struct pipe_framebuffer_state *framebuffer = &st->state.framebuffer;
struct gl_framebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb;
GLuint i;
st_flush_bitmap_cache(st);
st->state.fb_orientation = st_fb_orientation(fb);
framebuffer->width = fb->Width;
framebuffer->height = fb->Height;
/*printf("------ fb size %d x %d\n", fb->Width, fb->Height);*/
/* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
* to determine which surfaces to draw to
*/
framebuffer->nr_cbufs = fb->_NumColorDrawBuffers;
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
pipe_surface_reference(&framebuffer->cbufs[i], NULL);
strb = st_renderbuffer(fb->_ColorDrawBuffers[i]);
if (strb) {
if (strb->is_rtt ||
(strb->texture && util_format_is_srgb(strb->texture->format))) {
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
if (strb->surface) {
pipe_surface_reference(&framebuffer->cbufs[i], strb->surface);
}
strb->defined = GL_TRUE; /* we'll be drawing something */
}
}
for (i = framebuffer->nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) {
pipe_surface_reference(&framebuffer->cbufs[i], NULL);
}
/*
* Depth/Stencil renderbuffer/surface.
*/
strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
if (strb) {
if (strb->is_rtt) {
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
pipe_surface_reference(&framebuffer->zsbuf, strb->surface);
}
else {
strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
if (strb) {
assert(strb->surface);
pipe_surface_reference(&framebuffer->zsbuf, strb->surface);
}
else
pipe_surface_reference(&framebuffer->zsbuf, NULL);
}
#ifdef DEBUG
/* Make sure the resource binding flags were set properly */
for (i = 0; i < framebuffer->nr_cbufs; i++) {
assert(!framebuffer->cbufs[i] ||
framebuffer->cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET);
}
if (framebuffer->zsbuf) {
assert(framebuffer->zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL);
}
#endif
cso_set_framebuffer(st->cso_context, framebuffer);
}
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);
}
/**
* Called via ctx->Driver.GenerateMipmap().
*/
void
st_generate_mipmap(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
struct st_context *st = st_context(ctx);
struct st_texture_object *stObj = st_texture_object(texObj);
struct pipe_resource *pt = st_get_texobj_resource(texObj);
const uint baseLevel = texObj->BaseLevel;
enum pipe_format format;
uint lastLevel, first_layer, last_layer;
if (!pt)
return;
/* not sure if this ultimately actually should work,
but we're not supporting multisampled textures yet. */
assert(pt->nr_samples < 2);
/* find expected last mipmap level to generate*/
lastLevel = compute_num_levels(ctx, texObj, target) - 1;
if (lastLevel == 0)
return;
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(st);
/* The texture isn't in a "complete" state yet so set the expected
* lastLevel here, since it won't get done in st_finalize_texture().
*/
stObj->lastLevel = lastLevel;
if (!texObj->Immutable) {
const GLboolean genSave = texObj->GenerateMipmap;
/* Temporarily set GenerateMipmap to true so that allocate_full_mipmap()
* makes the right decision about full mipmap allocation.
*/
texObj->GenerateMipmap = GL_TRUE;
_mesa_prepare_mipmap_levels(ctx, texObj, baseLevel, lastLevel);
texObj->GenerateMipmap = genSave;
/* At this point, memory for all the texture levels has been
* allocated. However, the base level image may be in one resource
* while the subsequent/smaller levels may be in another resource.
* Finalizing the texture will copy the base images from the former
* resource to the latter.
*
* After this, we'll have all mipmap levels in one resource.
*/
st_finalize_texture(ctx, st->pipe, texObj);
}
pt = stObj->pt;
if (!pt) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "mipmap generation");
return;
}
assert(pt->last_level >= lastLevel);
if (pt->target == PIPE_TEXTURE_CUBE) {
first_layer = last_layer = _mesa_tex_target_to_face(target);
}
else {
first_layer = 0;
last_layer = util_max_layer(pt, baseLevel);
}
if (stObj->surface_based)
format = stObj->surface_format;
else
format = pt->format;
/* First see if the driver supports hardware mipmap generation,
* if not then generate the mipmap by rendering/texturing.
* If that fails, use the software fallback.
*/
if (!st->pipe->screen->get_param(st->pipe->screen,
PIPE_CAP_GENERATE_MIPMAP) ||
!st->pipe->generate_mipmap(st->pipe, pt, format, baseLevel,
lastLevel, first_layer, last_layer)) {
if (!util_gen_mipmap(st->pipe, pt, format, baseLevel, lastLevel,
first_layer, last_layer, PIPE_TEX_FILTER_LINEAR)) {
_mesa_generate_mipmap(ctx, target, texObj);
}
}
}
void st_validate_state( struct st_context *st )
{
struct st_state_flags *state = &st->dirty;
GLuint i;
/* The bitmap cache is immune to pixel unpack changes.
* Note that GLUT makes several calls to glPixelStore for each
* bitmap char it draws so this is an important check.
*/
if (state->mesa & ~_NEW_PACKUNPACK)
st_flush_bitmap_cache(st);
check_program_state( st );
st_manager_validate_framebuffers(st);
if (state->st == 0)
return;
/*printf("%s %x/%x\n", __FUNCTION__, state->mesa, state->st);*/
if (1) {
/* Debug version which enforces various sanity checks on the
* state flags which are generated and checked to help ensure
* state atoms are ordered correctly in the list.
*/
struct st_state_flags examined, prev;
memset(&examined, 0, sizeof(examined));
prev = *state;
for (i = 0; i < Elements(atoms); i++) {
const struct st_tracked_state *atom = atoms[i];
struct st_state_flags generated;
/*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
if (!(atom->dirty.mesa || atom->dirty.st) ||
!atom->update) {
printf("malformed atom %s\n", atom->name);
assert(0);
}
if (check_state(state, &atom->dirty)) {
atoms[i]->update( st );
/*printf("after: %x\n", atom->dirty.mesa);*/
}
accumulate_state(&examined, &atom->dirty);
/* generated = (prev ^ state)
* if (examined & generated)
* fail;
*/
xor_states(&generated, &prev, state);
assert(!check_state(&examined, &generated));
prev = *state;
}
/*printf("\n");*/
}
else {
for (i = 0; i < Elements(atoms); i++) {
if (check_state(state, &atoms[i]->dirty))
atoms[i]->update( st );
}
}
memset(state, 0, sizeof(*state));
}
static void
st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_query_object *stq = st_query_object(q);
unsigned type;
bool ret = false;
st_flush_bitmap_cache(st_context(ctx));
/* convert GL query type to Gallium query type */
switch (q->Target) {
case GL_ANY_SAMPLES_PASSED:
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
type = PIPE_QUERY_OCCLUSION_PREDICATE;
break;
case GL_SAMPLES_PASSED_ARB:
type = PIPE_QUERY_OCCLUSION_COUNTER;
break;
case GL_PRIMITIVES_GENERATED:
type = PIPE_QUERY_PRIMITIVES_GENERATED;
break;
case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
type = PIPE_QUERY_PRIMITIVES_EMITTED;
break;
case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
type = PIPE_QUERY_SO_OVERFLOW_PREDICATE;
break;
case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
type = PIPE_QUERY_SO_OVERFLOW_PREDICATE;
break;
case GL_TIME_ELAPSED:
if (st->has_time_elapsed)
type = PIPE_QUERY_TIME_ELAPSED;
else
type = PIPE_QUERY_TIMESTAMP;
break;
case GL_VERTICES_SUBMITTED_ARB:
case GL_PRIMITIVES_SUBMITTED_ARB:
case GL_VERTEX_SHADER_INVOCATIONS_ARB:
case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
case GL_GEOMETRY_SHADER_INVOCATIONS:
case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
type = PIPE_QUERY_PIPELINE_STATISTICS;
break;
default:
assert(0 && "unexpected query target in st_BeginQuery()");
return;
}
if (stq->type != type) {
/* free old query of different type */
free_queries(pipe, stq);
stq->type = PIPE_QUERY_TYPES; /* an invalid value */
}
if (q->Target == GL_TIME_ELAPSED &&
type == PIPE_QUERY_TIMESTAMP) {
/* Determine time elapsed by emitting two timestamp queries. */
if (!stq->pq_begin) {
stq->pq_begin = pipe->create_query(pipe, type, 0);
stq->type = type;
}
if (stq->pq_begin)
ret = pipe->end_query(pipe, stq->pq_begin);
} else {
if (!stq->pq) {
stq->pq = pipe->create_query(pipe, type, q->Stream);
stq->type = type;
}
if (stq->pq)
ret = pipe->begin_query(pipe, stq->pq);
}
if (!ret) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBeginQuery");
free_queries(pipe, stq);
q->Active = GL_FALSE;
return;
}
assert(stq->type == type);
}
/**
* 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;
st_flush_bitmap_cache(st);
/* This makes sure the pipe has the latest scissor, etc values */
st_validate_state( st, ST_PIPELINE_RENDER );
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);
}
/**
* 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,
unsigned stream,
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_vertex_array **arrays = ctx->Array._DrawArrays;
unsigned i;
/* Mesa core state should have been validated already */
assert(ctx->NewState == 0x0);
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(st);
/* 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) {
/* 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 != ~0U && max_index != ~0U) {
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:
*/
setup_primitive_restart(ctx, ib, &info);
}
else {
/* Transform feedback drawing is always non-indexed. */
/* Set info.count_from_stream_output. */
if (tfb_vertcount) {
if (!st_transform_feedback_draw_init(tfb_vertcount, stream, &info))
return;
}
}
assert(!indirect);
/* 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.vertices_per_patch = ctx->TessCtrlProgram.patch_vertices;
info.index_bias = prims[i].basevertex;
info.drawid = prims[i].draw_id;
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);
}
}