/**
* Map or unmap all the renderbuffers which we may need during
* software rendering.
* XXX in the future, we could probably convey extra information to
* reduce the number of mappings needed. I.e. if doing a glReadPixels
* from the depth buffer, we really only need one mapping.
*
* XXX Rewrite this function someday.
* We can probably just loop over all the renderbuffer attachments,
* map/unmap all of them, and not worry about the _ColorDrawBuffers
* _ColorReadBuffer, _DepthBuffer or _StencilBuffer fields.
*/
static void
intel_map_unmap_framebuffer(struct intel_context *intel,
struct gl_framebuffer *fb,
GLboolean map)
{
GLuint i;
/* color draw buffers */
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
if (map)
intel_renderbuffer_map(intel, fb->_ColorDrawBuffers[i]);
else
intel_renderbuffer_unmap(intel, fb->_ColorDrawBuffers[i]);
}
/* color read buffer */
if (map)
intel_renderbuffer_map(intel, fb->_ColorReadBuffer);
else
intel_renderbuffer_unmap(intel, fb->_ColorReadBuffer);
/* check for render to textures */
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att =
fb->Attachment + i;
struct gl_texture_object *tex = att->Texture;
if (tex) {
/* render to texture */
ASSERT(att->Renderbuffer);
if (map)
intel_tex_map_images(intel, intel_texture_object(tex));
else
intel_tex_unmap_images(intel, intel_texture_object(tex));
}
}
/* depth buffer (Note wrapper!) */
if (fb->_DepthBuffer) {
if (map)
intel_renderbuffer_map(intel, fb->_DepthBuffer->Wrapped);
else
intel_renderbuffer_unmap(intel, fb->_DepthBuffer->Wrapped);
}
/* stencil buffer (Note wrapper!) */
if (fb->_StencilBuffer) {
if (map)
intel_renderbuffer_map(intel, fb->_StencilBuffer->Wrapped);
else
intel_renderbuffer_unmap(intel, fb->_StencilBuffer->Wrapped);
}
intel_check_front_buffer_rendering(intel);
}
/***********************************************************************
* Emit all state:
*/
void brw_upload_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->intel.ctx;
struct intel_context *intel = &brw->intel;
struct brw_state_flags *state = &brw->state.dirty;
int i;
static int dirty_count = 0;
state->mesa |= brw->intel.NewGLState;
brw->intel.NewGLState = 0;
if (brw->emit_state_always) {
state->mesa |= ~0;
state->brw |= ~0;
state->cache |= ~0;
}
if (brw->fragment_program != ctx->FragmentProgram._Current) {
brw->fragment_program = ctx->FragmentProgram._Current;
brw->state.dirty.brw |= BRW_NEW_FRAGMENT_PROGRAM;
}
if (brw->vertex_program != ctx->VertexProgram._Current) {
brw->vertex_program = ctx->VertexProgram._Current;
brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
}
if ((state->mesa | state->cache | state->brw) == 0)
return;
intel_check_front_buffer_rendering(intel);
if (unlikely(INTEL_DEBUG)) {
/* 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 brw_state_flags examined, prev;
memset(&examined, 0, sizeof(examined));
prev = *state;
for (i = 0; i < brw->num_atoms; i++) {
const struct brw_tracked_state *atom = brw->atoms[i];
struct brw_state_flags generated;
if (check_state(state, &atom->dirty)) {
atom->emit(brw);
}
accumulate_state(&examined, &atom->dirty);
/* generated = (prev ^ state)
* if (examined & generated)
* fail;
*/
xor_states(&generated, &prev, state);
assert(!check_state(&examined, &generated));
prev = *state;
}
}
else {
for (i = 0; i < brw->num_atoms; i++) {
const struct brw_tracked_state *atom = brw->atoms[i];
if (check_state(state, &atom->dirty)) {
atom->emit(brw);
}
}
}
if (unlikely(INTEL_DEBUG & DEBUG_STATE)) {
brw_update_dirty_count(mesa_bits, state->mesa);
brw_update_dirty_count(brw_bits, state->brw);
brw_update_dirty_count(cache_bits, state->cache);
if (dirty_count++ % 1000 == 0) {
brw_print_dirty_count(mesa_bits, state->mesa);
brw_print_dirty_count(brw_bits, state->brw);
brw_print_dirty_count(cache_bits, state->cache);
fprintf(stderr, "\n");
}
}
memset(state, 0, sizeof(*state));
}
/*
* Render a bitmap.
*/
static bool
do_blit_bitmap( struct gl_context *ctx,
GLint dstx, GLint dsty,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap )
{
struct intel_context *intel = intel_context(ctx);
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct intel_renderbuffer *irb;
GLfloat tmpColor[4];
GLubyte ubcolor[4];
GLuint color;
GLsizei bitmap_width = width;
GLsizei bitmap_height = height;
GLint px, py;
GLuint stipple[32];
GLint orig_dstx = dstx;
GLint orig_dsty = dsty;
/* Update draw buffer bounds */
_mesa_update_state(ctx);
if (ctx->Depth.Test) {
/* The blit path produces incorrect results when depth testing is on.
* It seems the blit Z coord is always 1.0 (the far plane) so fragments
* will likely be obscured by other, closer geometry.
*/
return false;
}
intel_prepare_render(intel);
if (fb->_NumColorDrawBuffers != 1) {
perf_debug("accelerated glBitmap() only supports rendering to a "
"single color buffer\n");
return false;
}
irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
if (_mesa_is_bufferobj(unpack->BufferObj)) {
bitmap = map_pbo(ctx, width, height, unpack, bitmap);
if (bitmap == NULL)
return true; /* even though this is an error, we're done */
}
COPY_4V(tmpColor, ctx->Current.RasterColor);
if (_mesa_need_secondary_color(ctx)) {
ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor);
}
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]);
UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]);
switch (irb->mt->format) {
case MESA_FORMAT_B8G8R8A8_UNORM:
case MESA_FORMAT_B8G8R8X8_UNORM:
color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]);
break;
case MESA_FORMAT_B5G6R5_UNORM:
color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]);
break;
default:
perf_debug("Unsupported format %s in accelerated glBitmap()\n",
_mesa_get_format_name(irb->mt->format));
return false;
}
if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F))
return false;
/* Clip to buffer bounds and scissor. */
if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
fb->_Xmax, fb->_Ymax,
&dstx, &dsty, &width, &height))
goto out;
dsty = y_flip(fb, dsty, height);
#define DY 32
#define DX 32
/* Chop it all into chunks that can be digested by hardware: */
for (py = 0; py < height; py += DY) {
for (px = 0; px < width; px += DX) {
int h = MIN2(DY, height - py);
int w = MIN2(DX, width - px);
GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8;
GLenum logic_op = ctx->Color.ColorLogicOpEnabled ?
ctx->Color.LogicOp : GL_COPY;
assert(sz <= sizeof(stipple));
memset(stipple, 0, sz);
/* May need to adjust this when padding has been introduced in
* sz above:
*
* Have to translate destination coordinates back into source
* coordinates.
*/
int count = get_bitmap_rect(bitmap_width, bitmap_height, unpack,
bitmap,
-orig_dstx + (dstx + px),
-orig_dsty + y_flip(fb, dsty + py, h),
w, h,
(GLubyte *)stipple,
8,
_mesa_is_winsys_fbo(fb));
if (count == 0)
continue;
if (!intelEmitImmediateColorExpandBlit(intel,
irb->mt->cpp,
(GLubyte *)stipple,
sz,
color,
irb->mt->region->pitch,
irb->mt->region->bo,
0,
irb->mt->region->tiling,
dstx + px,
dsty + py,
w, h,
logic_op)) {
return false;
}
if (ctx->Query.CurrentOcclusionObject)
ctx->Query.CurrentOcclusionObject->Result += count;
}
}
out:
if (unlikely(INTEL_DEBUG & DEBUG_SYNC))
intel_batchbuffer_flush(intel);
if (_mesa_is_bufferobj(unpack->BufferObj)) {
/* done with PBO so unmap it now */
ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL);
}
intel_check_front_buffer_rendering(intel);
return true;
}
/**
* CopyPixels with the blitter. Don't support zooming, pixel transfer, etc.
*/
static GLboolean
do_blit_copypixels(struct gl_context * ctx,
GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct intel_context *intel = intel_context(ctx);
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct gl_framebuffer *read_fb = ctx->ReadBuffer;
GLint orig_dstx;
GLint orig_dsty;
GLint orig_srcx;
GLint orig_srcy;
GLboolean flip = GL_FALSE;
struct intel_renderbuffer *draw_irb = NULL;
struct intel_renderbuffer *read_irb = NULL;
/* Update draw buffer bounds */
_mesa_update_state(ctx);
switch (type) {
case GL_COLOR:
if (fb->_NumColorDrawBuffers != 1) {
fallback_debug("glCopyPixels() fallback: MRT\n");
return GL_FALSE;
}
draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer);
break;
case GL_DEPTH_STENCIL_EXT:
draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
read_irb =
intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer);
break;
case GL_DEPTH:
fallback_debug("glCopyPixels() fallback: GL_DEPTH\n");
return GL_FALSE;
case GL_STENCIL:
fallback_debug("glCopyPixels() fallback: GL_STENCIL\n");
return GL_FALSE;
default:
fallback_debug("glCopyPixels(): Unknown type\n");
return GL_FALSE;
}
if (!draw_irb) {
fallback_debug("glCopyPixels() fallback: missing draw buffer\n");
return GL_FALSE;
}
if (!read_irb) {
fallback_debug("glCopyPixels() fallback: missing read buffer\n");
return GL_FALSE;
}
if (draw_irb->Base.Format != read_irb->Base.Format &&
!(draw_irb->Base.Format == MESA_FORMAT_XRGB8888 &&
read_irb->Base.Format == MESA_FORMAT_ARGB8888)) {
fallback_debug("glCopyPixels() fallback: mismatched formats (%s -> %s\n",
_mesa_get_format_name(read_irb->Base.Format),
_mesa_get_format_name(draw_irb->Base.Format));
return GL_FALSE;
}
/* Copypixels can be more than a straight copy. Ensure all the
* extra operations are disabled:
*/
if (!intel_check_copypixel_blit_fragment_ops(ctx) ||
ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F)
return GL_FALSE;
intel_prepare_render(intel);
intel_flush(&intel->ctx);
/* Clip to destination buffer. */
orig_dstx = dstx;
orig_dsty = dsty;
if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
fb->_Xmax, fb->_Ymax,
&dstx, &dsty, &width, &height))
goto out;
/* Adjust src coords for our post-clipped destination origin */
srcx += dstx - orig_dstx;
srcy += dsty - orig_dsty;
/* Clip to source buffer. */
orig_srcx = srcx;
orig_srcy = srcy;
if (!_mesa_clip_to_region(0, 0,
read_fb->Width, read_fb->Height,
&srcx, &srcy, &width, &height))
goto out;
/* Adjust dst coords for our post-clipped source origin */
dstx += srcx - orig_srcx;
dsty += srcy - orig_srcy;
/* Flip dest Y if it's a window system framebuffer. */
if (fb->Name == 0) {
/* copypixels to a window system framebuffer */
dsty = fb->Height - dsty - height;
flip = !flip;
}
/* Flip source Y if it's a window system framebuffer. */
if (read_fb->Name == 0) {
srcy = read_fb->Height - srcy - height;
flip = !flip;
}
srcx += read_irb->draw_x;
srcy += read_irb->draw_y;
dstx += draw_irb->draw_x;
dsty += draw_irb->draw_y;
if (!intel_region_copy(intel,
draw_irb->region, 0, dstx, dsty,
read_irb->region, 0, srcx, srcy,
width, height, flip,
ctx->Color.ColorLogicOpEnabled ?
ctx->Color.LogicOp : GL_COPY)) {
DBG("%s: blit failure\n", __FUNCTION__);
return GL_FALSE;
}
out:
intel_check_front_buffer_rendering(intel);
DBG("%s: success\n", __FUNCTION__);
return GL_TRUE;
}
static bool
do_blit_drawpixels(struct gl_context * ctx,
GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid * pixels)
{
struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *src = intel_buffer_object(unpack->BufferObj);
GLuint src_offset;
drm_intel_bo *src_buffer;
DBG("%s\n", __FUNCTION__);
if (!intel_check_blit_fragment_ops(ctx, false))
return false;
if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
DBG("%s: fallback due to MRT\n", __FUNCTION__);
return false;
}
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
if (!_mesa_format_matches_format_and_type(irb->mt->format, format, type,
false)) {
DBG("%s: bad format for blit\n", __FUNCTION__);
return false;
}
if (unpack->SwapBytes || unpack->LsbFirst ||
unpack->SkipPixels || unpack->SkipRows) {
DBG("%s: bad packing params\n", __FUNCTION__);
return false;
}
int src_stride = _mesa_image_row_stride(unpack, width, format, type);
bool src_flip = false;
/* Mesa flips the src_stride for unpack->Invert, but we want our mt to have
* a normal src_stride.
*/
if (unpack->Invert) {
src_stride = -src_stride;
src_flip = true;
}
src_offset = (GLintptr)pixels;
src_offset += _mesa_image_offset(2, unpack, width, height,
format, type, 0, 0, 0);
intel_prepare_render(brw);
src_buffer = intel_bufferobj_buffer(brw, src,
src_offset, width * height *
irb->mt->cpp);
struct intel_mipmap_tree *pbo_mt =
intel_miptree_create_for_bo(brw,
src_buffer,
irb->mt->format,
src_offset,
width, height,
src_stride, I915_TILING_NONE);
if (!pbo_mt)
return false;
if (!intel_miptree_blit(brw,
pbo_mt, 0, 0,
0, 0, src_flip,
irb->mt, irb->mt_level, irb->mt_layer,
x, y, _mesa_is_winsys_fbo(ctx->DrawBuffer),
width, height, GL_COPY)) {
DBG("%s: blit failed\n", __FUNCTION__);
intel_miptree_release(&pbo_mt);
return false;
}
intel_miptree_release(&pbo_mt);
if (ctx->Query.CurrentOcclusionObject)
ctx->Query.CurrentOcclusionObject->Result += width * height;
intel_check_front_buffer_rendering(brw);
DBG("%s: success\n", __FUNCTION__);
return true;
}
/**
* CopyPixels with the blitter. Don't support zooming, pixel transfer, etc.
*/
static bool
do_blit_copypixels(struct gl_context * ctx,
GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct intel_context *intel = intel_context(ctx);
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct gl_framebuffer *read_fb = ctx->ReadBuffer;
GLint orig_dstx;
GLint orig_dsty;
GLint orig_srcx;
GLint orig_srcy;
struct intel_renderbuffer *draw_irb = NULL;
struct intel_renderbuffer *read_irb = NULL;
/* Update draw buffer bounds */
_mesa_update_state(ctx);
switch (type) {
case GL_COLOR:
if (fb->_NumColorDrawBuffers != 1) {
perf_debug("glCopyPixels() fallback: MRT\n");
return false;
}
draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer);
break;
case GL_DEPTH_STENCIL_EXT:
draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
read_irb =
intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer);
break;
case GL_DEPTH:
perf_debug("glCopyPixels() fallback: GL_DEPTH\n");
return false;
case GL_STENCIL:
perf_debug("glCopyPixels() fallback: GL_STENCIL\n");
return false;
default:
perf_debug("glCopyPixels(): Unknown type\n");
return false;
}
if (!draw_irb) {
perf_debug("glCopyPixels() fallback: missing draw buffer\n");
return false;
}
if (!read_irb) {
perf_debug("glCopyPixels() fallback: missing read buffer\n");
return false;
}
if (ctx->_ImageTransferState) {
perf_debug("glCopyPixels(): Unsupported image transfer state\n");
return false;
}
if (ctx->Depth.Test) {
perf_debug("glCopyPixels(): Unsupported depth test state\n");
return false;
}
if (ctx->Stencil._Enabled) {
perf_debug("glCopyPixels(): Unsupported stencil test state\n");
return false;
}
if (ctx->Fog.Enabled ||
ctx->Texture._MaxEnabledTexImageUnit != -1 ||
ctx->FragmentProgram._Enabled) {
perf_debug("glCopyPixels(): Unsupported fragment shader state\n");
return false;
}
if (ctx->Color.AlphaEnabled ||
ctx->Color.BlendEnabled) {
perf_debug("glCopyPixels(): Unsupported blend state\n");
return false;
}
if (!ctx->Color.ColorMask[0][0] ||
!ctx->Color.ColorMask[0][1] ||
!ctx->Color.ColorMask[0][2] ||
!ctx->Color.ColorMask[0][3]) {
perf_debug("glCopyPixels(): Unsupported color mask state\n");
return false;
}
if (ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) {
perf_debug("glCopyPixles(): Unsupported pixel zoom\n");
return false;
}
intel_prepare_render(intel);
intel_flush(&intel->ctx);
/* Clip to destination buffer. */
orig_dstx = dstx;
orig_dsty = dsty;
if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
fb->_Xmax, fb->_Ymax,
&dstx, &dsty, &width, &height))
goto out;
/* Adjust src coords for our post-clipped destination origin */
srcx += dstx - orig_dstx;
srcy += dsty - orig_dsty;
/* Clip to source buffer. */
orig_srcx = srcx;
orig_srcy = srcy;
if (!_mesa_clip_to_region(0, 0,
read_fb->Width, read_fb->Height,
&srcx, &srcy, &width, &height))
goto out;
/* Adjust dst coords for our post-clipped source origin */
dstx += srcx - orig_srcx;
dsty += srcy - orig_srcy;
if (!intel_miptree_blit(intel,
read_irb->mt, read_irb->mt_level, read_irb->mt_layer,
srcx, srcy, _mesa_is_winsys_fbo(read_fb),
draw_irb->mt, draw_irb->mt_level, draw_irb->mt_layer,
dstx, dsty, _mesa_is_winsys_fbo(fb),
width, height,
(ctx->Color.ColorLogicOpEnabled ?
ctx->Color.LogicOp : GL_COPY))) {
DBG("%s: blit failure\n", __func__);
return false;
}
if (ctx->Query.CurrentOcclusionObject)
ctx->Query.CurrentOcclusionObject->Result += width * height;
out:
intel_check_front_buffer_rendering(intel);
DBG("%s: success\n", __func__);
return true;
}