|
|
|
@@ -1,495 +0,0 @@ |
|
|
|
/* |
|
|
|
* Mesa 3-D graphics library |
|
|
|
* |
|
|
|
* Copyright (C) 2015 Intel Corporation. All Rights Reserved. |
|
|
|
* |
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a |
|
|
|
* copy of this software and associated documentation files (the "Software"), |
|
|
|
* to deal in the Software without restriction, including without limitation |
|
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
|
|
|
* and/or sell copies of the Software, and to permit persons to whom the |
|
|
|
* Software is furnished to do so, subject to the following conditions: |
|
|
|
* |
|
|
|
* The above copyright notice and this permission notice shall be included |
|
|
|
* in all copies or substantial portions of the Software. |
|
|
|
* |
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
|
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
|
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
|
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
|
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
|
|
|
* OTHER DEALINGS IN THE SOFTWARE. |
|
|
|
* |
|
|
|
* Authors: |
|
|
|
* Jason Ekstrand <jason.ekstrand@intel.com> |
|
|
|
*/ |
|
|
|
|
|
|
|
#include "blend.h" |
|
|
|
#include "bufferobj.h" |
|
|
|
#include "buffers.h" |
|
|
|
#include "clear.h" |
|
|
|
#include "fbobject.h" |
|
|
|
#include "framebuffer.h" |
|
|
|
#include "glformats.h" |
|
|
|
#include "glheader.h" |
|
|
|
#include "image.h" |
|
|
|
#include "macros.h" |
|
|
|
#include "meta.h" |
|
|
|
#include "pbo.h" |
|
|
|
#include "readpix.h" |
|
|
|
#include "shaderapi.h" |
|
|
|
#include "state.h" |
|
|
|
#include "teximage.h" |
|
|
|
#include "texobj.h" |
|
|
|
#include "texstate.h" |
|
|
|
#include "uniforms.h" |
|
|
|
#include "varray.h" |
|
|
|
|
|
|
|
static bool |
|
|
|
need_signed_unsigned_int_conversion(mesa_format mesaFormat, |
|
|
|
GLenum format, GLenum type) |
|
|
|
{ |
|
|
|
const GLenum mesaFormatType = _mesa_get_format_datatype(mesaFormat); |
|
|
|
const bool is_format_integer = _mesa_is_enum_format_integer(format); |
|
|
|
return (mesaFormatType == GL_INT && |
|
|
|
is_format_integer && |
|
|
|
(type == GL_UNSIGNED_INT || |
|
|
|
type == GL_UNSIGNED_SHORT || |
|
|
|
type == GL_UNSIGNED_BYTE)) || |
|
|
|
(mesaFormatType == GL_UNSIGNED_INT && |
|
|
|
is_format_integer && |
|
|
|
(type == GL_INT || |
|
|
|
type == GL_SHORT || |
|
|
|
type == GL_BYTE)); |
|
|
|
} |
|
|
|
|
|
|
|
static struct gl_texture_image * |
|
|
|
create_texture_for_pbo(struct gl_context *ctx, |
|
|
|
bool create_pbo, GLenum pbo_target, |
|
|
|
int dims, int width, int height, int depth, |
|
|
|
GLenum format, GLenum type, const void *pixels, |
|
|
|
const struct gl_pixelstore_attrib *packing, |
|
|
|
struct gl_buffer_object **tmp_pbo, GLuint *tmp_tex) |
|
|
|
{ |
|
|
|
const mesa_format pbo_format = |
|
|
|
_mesa_tex_format_from_format_and_type(ctx, format, type); |
|
|
|
GLenum internal_format; |
|
|
|
unsigned row_stride; |
|
|
|
struct gl_buffer_object *buffer_obj; |
|
|
|
struct gl_texture_object *tex_obj; |
|
|
|
struct gl_texture_image *tex_image; |
|
|
|
bool read_only; |
|
|
|
|
|
|
|
if (packing->SwapBytes || |
|
|
|
packing->LsbFirst || |
|
|
|
packing->Invert) |
|
|
|
return NULL; |
|
|
|
|
|
|
|
if (pbo_format == MESA_FORMAT_NONE) |
|
|
|
return NULL; |
|
|
|
|
|
|
|
/* Account for SKIP_PIXELS, SKIP_ROWS, ALIGNMENT, and SKIP_IMAGES */ |
|
|
|
uint32_t first_pixel = _mesa_image_offset(dims, packing, width, height, |
|
|
|
format, type, |
|
|
|
0, 0, 0); |
|
|
|
uint32_t last_pixel = _mesa_image_offset(dims, packing, width, height, |
|
|
|
format, type, |
|
|
|
depth-1, height-1, width); |
|
|
|
row_stride = _mesa_image_row_stride(packing, width, format, type); |
|
|
|
|
|
|
|
if (_mesa_is_bufferobj(packing->BufferObj)) { |
|
|
|
*tmp_pbo = NULL; |
|
|
|
buffer_obj = packing->BufferObj; |
|
|
|
first_pixel += (intptr_t)pixels; |
|
|
|
} else { |
|
|
|
bool is_pixel_pack = pbo_target == GL_PIXEL_PACK_BUFFER; |
|
|
|
|
|
|
|
assert(create_pbo); |
|
|
|
|
|
|
|
*tmp_pbo = ctx->Driver.NewBufferObject(ctx, 0xDEADBEEF); |
|
|
|
if (*tmp_pbo == NULL) |
|
|
|
return NULL; |
|
|
|
|
|
|
|
/* In case of GL_PIXEL_PACK_BUFFER, pass null pointer for the pixel |
|
|
|
* data to avoid unnecessary data copying in _mesa_buffer_data. |
|
|
|
*/ |
|
|
|
if (is_pixel_pack) |
|
|
|
_mesa_buffer_data(ctx, *tmp_pbo, GL_NONE, |
|
|
|
last_pixel - first_pixel, |
|
|
|
NULL, |
|
|
|
GL_STREAM_READ, |
|
|
|
__func__); |
|
|
|
else |
|
|
|
_mesa_buffer_data(ctx, *tmp_pbo, GL_NONE, |
|
|
|
last_pixel - first_pixel, |
|
|
|
(char *)pixels + first_pixel, |
|
|
|
GL_STREAM_DRAW, |
|
|
|
__func__); |
|
|
|
|
|
|
|
buffer_obj = *tmp_pbo; |
|
|
|
first_pixel = 0; |
|
|
|
} |
|
|
|
|
|
|
|
_mesa_GenTextures(1, tmp_tex); |
|
|
|
tex_obj = _mesa_lookup_texture(ctx, *tmp_tex); |
|
|
|
_mesa_initialize_texture_object(ctx, tex_obj, *tmp_tex, GL_TEXTURE_2D); |
|
|
|
/* This must be set after _mesa_initialize_texture_object, not before. */ |
|
|
|
tex_obj->Immutable = GL_TRUE; |
|
|
|
tex_obj->ImmutableLevels = 1; |
|
|
|
/* This is required for interactions with ARB_texture_view. */ |
|
|
|
tex_obj->NumLayers = 1; |
|
|
|
|
|
|
|
internal_format = _mesa_get_format_base_format(pbo_format); |
|
|
|
|
|
|
|
/* The texture is addressed as a single very-tall image, so we |
|
|
|
* need to pack the multiple image depths together taking the |
|
|
|
* inter-image padding into account. |
|
|
|
*/ |
|
|
|
int image_height = packing->ImageHeight == 0 ? height : packing->ImageHeight; |
|
|
|
int full_height = image_height * (depth - 1) + height; |
|
|
|
|
|
|
|
tex_image = _mesa_get_tex_image(ctx, tex_obj, tex_obj->Target, 0); |
|
|
|
_mesa_init_teximage_fields(ctx, tex_image, width, full_height, 1, |
|
|
|
0, internal_format, pbo_format); |
|
|
|
|
|
|
|
read_only = pbo_target == GL_PIXEL_UNPACK_BUFFER; |
|
|
|
if (!ctx->Driver.SetTextureStorageForBufferObject(ctx, tex_obj, |
|
|
|
buffer_obj, |
|
|
|
first_pixel, |
|
|
|
row_stride, |
|
|
|
read_only)) { |
|
|
|
_mesa_DeleteTextures(1, tmp_tex); |
|
|
|
_mesa_reference_buffer_object(ctx, tmp_pbo, NULL); |
|
|
|
return NULL; |
|
|
|
} |
|
|
|
|
|
|
|
return tex_image; |
|
|
|
} |
|
|
|
|
|
|
|
bool |
|
|
|
_mesa_meta_pbo_TexSubImage(struct gl_context *ctx, GLuint dims, |
|
|
|
struct gl_texture_image *tex_image, |
|
|
|
int xoffset, int yoffset, int zoffset, |
|
|
|
int width, int height, int depth, |
|
|
|
GLenum format, GLenum type, const void *pixels, |
|
|
|
bool create_pbo, |
|
|
|
const struct gl_pixelstore_attrib *packing) |
|
|
|
{ |
|
|
|
struct gl_buffer_object *pbo = NULL; |
|
|
|
GLuint pbo_tex = 0; |
|
|
|
struct gl_framebuffer *readFb = NULL; |
|
|
|
struct gl_framebuffer *drawFb = NULL; |
|
|
|
int image_height; |
|
|
|
struct gl_texture_image *pbo_tex_image; |
|
|
|
GLenum status; |
|
|
|
bool success = false; |
|
|
|
int z; |
|
|
|
|
|
|
|
if (!_mesa_is_bufferobj(packing->BufferObj) && |
|
|
|
(!create_pbo || pixels == NULL)) |
|
|
|
return false; |
|
|
|
|
|
|
|
if (format == GL_DEPTH_COMPONENT || |
|
|
|
format == GL_DEPTH_STENCIL || |
|
|
|
format == GL_STENCIL_INDEX || |
|
|
|
format == GL_COLOR_INDEX) |
|
|
|
return false; |
|
|
|
|
|
|
|
if (ctx->_ImageTransferState) |
|
|
|
return false; |
|
|
|
|
|
|
|
/* This function rely on BlitFramebuffer to fill in the pixel data for |
|
|
|
* glTex[Sub]Image*D. But, BlitFrameBuffer doesn't support signed to |
|
|
|
* unsigned or unsigned to signed integer conversions. |
|
|
|
*/ |
|
|
|
if (need_signed_unsigned_int_conversion(tex_image->TexFormat, format, type)) |
|
|
|
return false; |
|
|
|
|
|
|
|
/* For arrays, use a tall (height * depth) 2D texture but taking into |
|
|
|
* account the inter-image padding specified with the image height packing |
|
|
|
* property. |
|
|
|
*/ |
|
|
|
image_height = packing->ImageHeight == 0 ? height : packing->ImageHeight; |
|
|
|
|
|
|
|
_mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER | |
|
|
|
MESA_META_PIXEL_STORE)); |
|
|
|
|
|
|
|
pbo_tex_image = create_texture_for_pbo(ctx, create_pbo, |
|
|
|
GL_PIXEL_UNPACK_BUFFER, |
|
|
|
dims, width, height, depth, |
|
|
|
format, type, pixels, packing, |
|
|
|
&pbo, &pbo_tex); |
|
|
|
if (!pbo_tex_image) { |
|
|
|
_mesa_meta_end(ctx); |
|
|
|
return false; |
|
|
|
} |
|
|
|
|
|
|
|
readFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF); |
|
|
|
if (readFb == NULL) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
drawFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF); |
|
|
|
if (drawFb == NULL) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
_mesa_bind_framebuffers(ctx, drawFb, readFb); |
|
|
|
|
|
|
|
if (tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY) { |
|
|
|
assert(depth == 1); |
|
|
|
assert(zoffset == 0); |
|
|
|
depth = height; |
|
|
|
height = 1; |
|
|
|
image_height = 1; |
|
|
|
zoffset = yoffset; |
|
|
|
yoffset = 0; |
|
|
|
} |
|
|
|
|
|
|
|
_mesa_meta_framebuffer_texture_image(ctx, ctx->ReadBuffer, |
|
|
|
GL_COLOR_ATTACHMENT0, |
|
|
|
pbo_tex_image, 0); |
|
|
|
/* If this passes on the first layer it should pass on the others */ |
|
|
|
status = _mesa_check_framebuffer_status(ctx, ctx->ReadBuffer); |
|
|
|
if (status != GL_FRAMEBUFFER_COMPLETE) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
_mesa_meta_framebuffer_texture_image(ctx, ctx->DrawBuffer, |
|
|
|
GL_COLOR_ATTACHMENT0, |
|
|
|
tex_image, zoffset); |
|
|
|
/* If this passes on the first layer it should pass on the others */ |
|
|
|
status = _mesa_check_framebuffer_status(ctx, ctx->DrawBuffer); |
|
|
|
if (status != GL_FRAMEBUFFER_COMPLETE) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
/* Explicitly disable sRGB encoding */ |
|
|
|
ctx->DrawBuffer->Visual.sRGBCapable = false; |
|
|
|
|
|
|
|
_mesa_update_state(ctx); |
|
|
|
|
|
|
|
if (_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer, |
|
|
|
0, 0, width, height, |
|
|
|
xoffset, yoffset, |
|
|
|
xoffset + width, yoffset + height, |
|
|
|
GL_COLOR_BUFFER_BIT, GL_NEAREST)) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
for (z = 1; z < depth; z++) { |
|
|
|
_mesa_meta_framebuffer_texture_image(ctx, ctx->DrawBuffer, |
|
|
|
GL_COLOR_ATTACHMENT0, |
|
|
|
tex_image, zoffset + z); |
|
|
|
|
|
|
|
_mesa_update_state(ctx); |
|
|
|
|
|
|
|
_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer, |
|
|
|
0, z * image_height, |
|
|
|
width, z * image_height + height, |
|
|
|
xoffset, yoffset, |
|
|
|
xoffset + width, yoffset + height, |
|
|
|
GL_COLOR_BUFFER_BIT, GL_NEAREST); |
|
|
|
} |
|
|
|
|
|
|
|
success = true; |
|
|
|
|
|
|
|
fail: |
|
|
|
_mesa_reference_framebuffer(&readFb, NULL); |
|
|
|
_mesa_reference_framebuffer(&drawFb, NULL); |
|
|
|
_mesa_DeleteTextures(1, &pbo_tex); |
|
|
|
_mesa_reference_buffer_object(ctx, &pbo, NULL); |
|
|
|
|
|
|
|
_mesa_meta_end(ctx); |
|
|
|
|
|
|
|
return success; |
|
|
|
} |
|
|
|
|
|
|
|
bool |
|
|
|
_mesa_meta_pbo_GetTexSubImage(struct gl_context *ctx, GLuint dims, |
|
|
|
struct gl_texture_image *tex_image, |
|
|
|
int xoffset, int yoffset, int zoffset, |
|
|
|
int width, int height, int depth, |
|
|
|
GLenum format, GLenum type, const void *pixels, |
|
|
|
const struct gl_pixelstore_attrib *packing) |
|
|
|
{ |
|
|
|
struct gl_buffer_object *pbo = NULL; |
|
|
|
GLuint pbo_tex = 0; |
|
|
|
struct gl_framebuffer *readFb; |
|
|
|
struct gl_framebuffer *drawFb; |
|
|
|
int image_height; |
|
|
|
struct gl_texture_image *pbo_tex_image; |
|
|
|
struct gl_renderbuffer *rb = NULL; |
|
|
|
GLenum dstBaseFormat = _mesa_unpack_format_to_base_format(format); |
|
|
|
GLenum status, src_base_format; |
|
|
|
bool success = false, clear_channels_to_zero = false; |
|
|
|
float save_clear_color[4]; |
|
|
|
int z; |
|
|
|
|
|
|
|
if (!_mesa_is_bufferobj(packing->BufferObj)) |
|
|
|
return false; |
|
|
|
|
|
|
|
if (format == GL_DEPTH_COMPONENT || |
|
|
|
format == GL_DEPTH_STENCIL || |
|
|
|
format == GL_STENCIL_INDEX || |
|
|
|
format == GL_COLOR_INDEX) |
|
|
|
return false; |
|
|
|
|
|
|
|
/* Don't use meta path for readpixels in below conditions. */ |
|
|
|
if (!tex_image) { |
|
|
|
rb = ctx->ReadBuffer->_ColorReadBuffer; |
|
|
|
|
|
|
|
/* _mesa_get_readpixels_transfer_ops() includes the cases of read |
|
|
|
* color clamping along with the ctx->_ImageTransferState. |
|
|
|
*/ |
|
|
|
if (_mesa_get_readpixels_transfer_ops(ctx, rb->Format, format, |
|
|
|
type, GL_FALSE)) |
|
|
|
return false; |
|
|
|
|
|
|
|
if (_mesa_need_rgb_to_luminance_conversion(rb->_BaseFormat, |
|
|
|
dstBaseFormat)) |
|
|
|
return false; |
|
|
|
|
|
|
|
/* This function rely on BlitFramebuffer to fill in the pixel data for |
|
|
|
* ReadPixels. But, BlitFrameBuffer doesn't support signed to unsigned |
|
|
|
* or unsigned to signed integer conversions. OpenGL spec expects an |
|
|
|
* invalid operation in that case. |
|
|
|
*/ |
|
|
|
if (need_signed_unsigned_int_conversion(rb->Format, format, type)) |
|
|
|
return false; |
|
|
|
} else { |
|
|
|
if (need_signed_unsigned_int_conversion(tex_image->TexFormat, format, type)) |
|
|
|
return false; |
|
|
|
} |
|
|
|
|
|
|
|
/* For arrays, use a tall (height * depth) 2D texture but taking into |
|
|
|
* account the inter-image padding specified with the image height packing |
|
|
|
* property. |
|
|
|
*/ |
|
|
|
image_height = packing->ImageHeight == 0 ? height : packing->ImageHeight; |
|
|
|
|
|
|
|
_mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER | |
|
|
|
MESA_META_PIXEL_STORE)); |
|
|
|
|
|
|
|
pbo_tex_image = create_texture_for_pbo(ctx, false, GL_PIXEL_PACK_BUFFER, |
|
|
|
dims, width, height, depth, |
|
|
|
format, type, pixels, packing, |
|
|
|
&pbo, &pbo_tex); |
|
|
|
|
|
|
|
if (!pbo_tex_image) { |
|
|
|
_mesa_meta_end(ctx); |
|
|
|
return false; |
|
|
|
} |
|
|
|
|
|
|
|
/* GL_CLAMP_FRAGMENT_COLOR doesn't affect ReadPixels and GettexImage */ |
|
|
|
if (ctx->Extensions.ARB_color_buffer_float) |
|
|
|
_mesa_ClampColor(GL_CLAMP_FRAGMENT_COLOR, GL_FALSE); |
|
|
|
|
|
|
|
readFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF); |
|
|
|
if (readFb == NULL) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
drawFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF); |
|
|
|
if (drawFb == NULL) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
if (tex_image && tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY) { |
|
|
|
assert(depth == 1); |
|
|
|
assert(zoffset == 0); |
|
|
|
depth = height; |
|
|
|
height = 1; |
|
|
|
image_height = 1; |
|
|
|
zoffset = yoffset; |
|
|
|
yoffset = 0; |
|
|
|
} |
|
|
|
|
|
|
|
/* If we were given a texture, bind it to the read framebuffer. If not, |
|
|
|
* we're doing a ReadPixels and we should just use whatever framebuffer |
|
|
|
* the client has bound. |
|
|
|
*/ |
|
|
|
_mesa_bind_framebuffers(ctx, drawFb, tex_image ? readFb : ctx->ReadBuffer); |
|
|
|
if (tex_image) { |
|
|
|
_mesa_meta_framebuffer_texture_image(ctx, ctx->ReadBuffer, |
|
|
|
GL_COLOR_ATTACHMENT0, |
|
|
|
tex_image, zoffset); |
|
|
|
/* If this passes on the first layer it should pass on the others */ |
|
|
|
status = _mesa_check_framebuffer_status(ctx, ctx->ReadBuffer); |
|
|
|
if (status != GL_FRAMEBUFFER_COMPLETE) |
|
|
|
goto fail; |
|
|
|
} else { |
|
|
|
assert(depth == 1); |
|
|
|
} |
|
|
|
|
|
|
|
_mesa_meta_framebuffer_texture_image(ctx, ctx->DrawBuffer, |
|
|
|
GL_COLOR_ATTACHMENT0, |
|
|
|
pbo_tex_image, 0); |
|
|
|
/* If this passes on the first layer it should pass on the others */ |
|
|
|
status = _mesa_check_framebuffer_status(ctx, ctx->DrawBuffer); |
|
|
|
if (status != GL_FRAMEBUFFER_COMPLETE) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
/* Explicitly disable sRGB encoding */ |
|
|
|
ctx->DrawBuffer->Visual.sRGBCapable = false; |
|
|
|
|
|
|
|
_mesa_update_state(ctx); |
|
|
|
|
|
|
|
if (_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer, |
|
|
|
xoffset, yoffset, |
|
|
|
xoffset + width, yoffset + height, |
|
|
|
0, 0, width, height, |
|
|
|
GL_COLOR_BUFFER_BIT, GL_NEAREST)) |
|
|
|
goto fail; |
|
|
|
|
|
|
|
src_base_format = tex_image ? |
|
|
|
tex_image->_BaseFormat : |
|
|
|
ctx->ReadBuffer->_ColorReadBuffer->_BaseFormat; |
|
|
|
|
|
|
|
/* Depending on the base formats involved we might need to rebase some |
|
|
|
* values. For example if we download from a Luminance format to RGBA |
|
|
|
* format, we want G=0 and B=0. |
|
|
|
*/ |
|
|
|
clear_channels_to_zero = |
|
|
|
_mesa_need_luminance_to_rgb_conversion(src_base_format, |
|
|
|
pbo_tex_image->_BaseFormat); |
|
|
|
|
|
|
|
if (clear_channels_to_zero) { |
|
|
|
memcpy(save_clear_color, ctx->Color.ClearColor.f, 4 * sizeof(float)); |
|
|
|
/* Clear the Green, Blue channels. */ |
|
|
|
_mesa_ColorMask(GL_FALSE, GL_TRUE, GL_TRUE, |
|
|
|
src_base_format != GL_LUMINANCE_ALPHA); |
|
|
|
_mesa_ClearColor(0.0, 0.0, 0.0, 1.0); |
|
|
|
_mesa_Clear(GL_COLOR_BUFFER_BIT); |
|
|
|
} |
|
|
|
|
|
|
|
for (z = 1; z < depth; z++) { |
|
|
|
_mesa_meta_framebuffer_texture_image(ctx, ctx->ReadBuffer, |
|
|
|
GL_COLOR_ATTACHMENT0, |
|
|
|
tex_image, zoffset + z); |
|
|
|
|
|
|
|
_mesa_update_state(ctx); |
|
|
|
|
|
|
|
_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer, |
|
|
|
xoffset, yoffset, |
|
|
|
xoffset + width, yoffset + height, |
|
|
|
0, z * image_height, |
|
|
|
width, z * image_height + height, |
|
|
|
GL_COLOR_BUFFER_BIT, GL_NEAREST); |
|
|
|
if (clear_channels_to_zero) |
|
|
|
_mesa_Clear(GL_COLOR_BUFFER_BIT); |
|
|
|
} |
|
|
|
|
|
|
|
/* Unmask the color channels and restore the saved clear color values. */ |
|
|
|
if (clear_channels_to_zero) { |
|
|
|
_mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
|
|
|
_mesa_ClearColor(save_clear_color[0], save_clear_color[1], |
|
|
|
save_clear_color[2], save_clear_color[3]); |
|
|
|
} |
|
|
|
|
|
|
|
success = true; |
|
|
|
|
|
|
|
fail: |
|
|
|
_mesa_reference_framebuffer(&drawFb, NULL); |
|
|
|
_mesa_reference_framebuffer(&readFb, NULL); |
|
|
|
_mesa_DeleteTextures(1, &pbo_tex); |
|
|
|
_mesa_reference_buffer_object(ctx, &pbo, NULL); |
|
|
|
|
|
|
|
_mesa_meta_end(ctx); |
|
|
|
|
|
|
|
return success; |
|
|
|
} |