| /* |
| * 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) |
| { |
| uint32_t pbo_format; |
| 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; |
| |
| pbo_format = _mesa_format_from_format_and_type(format, type); |
| if (_mesa_format_is_mesa_array_format(pbo_format)) |
| pbo_format = _mesa_format_from_array_format(pbo_format); |
| |
| if (!pbo_format || !ctx->TextureFormatSupported[pbo_format]) |
| 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; |
| /* 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; |
| } |
