diff options
| -rw-r--r-- | src/mesa/drivers/common/meta.h | 8 | ||||
| -rw-r--r-- | src/mesa/drivers/common/meta_tex_subimage.c | 117 |
2 files changed, 125 insertions, 0 deletions
diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h index 87e9cc92946..20d30f7e6ab 100644 --- a/src/mesa/drivers/common/meta.h +++ b/src/mesa/drivers/common/meta.h @@ -531,6 +531,14 @@ _mesa_meta_pbo_TexSubImage(struct gl_context *ctx, GLuint dims, bool allocate_storage, bool create_pbo, const struct gl_pixelstore_attrib *packing); +extern 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); + extern void _mesa_meta_CopyTexSubImage(struct gl_context *ctx, GLuint dims, struct gl_texture_image *texImage, diff --git a/src/mesa/drivers/common/meta_tex_subimage.c b/src/mesa/drivers/common/meta_tex_subimage.c index 6c921125fc0..b32310c3091 100644 --- a/src/mesa/drivers/common/meta_tex_subimage.c +++ b/src/mesa/drivers/common/meta_tex_subimage.c @@ -236,3 +236,120 @@ fail: 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) +{ + GLuint pbo = 0, pbo_tex = 0, fbos[2] = { 0, 0 }; + struct gl_texture_image *pbo_tex_image; + GLenum status; + bool success = false; + + /* XXX: This should probably be passed in from somewhere */ + const char *where = "_mesa_meta_pbo_GetTexSubImage"; + + 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; + + if (ctx->_ImageTransferState) + return false; + + if (!_mesa_validate_pbo_access(dims, packing, width, height, depth, + format, type, INT_MAX, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(out of bounds PBO access)", where); + return true; + } + + if (_mesa_check_disallowed_mapping(packing->BufferObj)) { + /* buffer is mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where); + return true; + } + + pbo_tex_image = create_texture_for_pbo(ctx, false, GL_PIXEL_PACK_BUFFER, + width, height, depth, + format, type, pixels, packing, + &pbo, &pbo_tex); + if (!pbo_tex_image) + return false; + + /* Only stash the current FBO */ + _mesa_meta_begin(ctx, 0); + + _mesa_GenFramebuffers(2, fbos); + + if (tex_image && tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY) { + assert(depth == 1); + depth = height; + height = 1; + } + + /* 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. + */ + if (tex_image) { + _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]); + _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + tex_image, zoffset); + /* If this passes on the first layer it should pass on the others */ + status = _mesa_CheckFramebufferStatus(GL_READ_FRAMEBUFFER); + if (status != GL_FRAMEBUFFER_COMPLETE) + goto fail; + } else { + assert(depth == 1); + } + + _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]); + _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + pbo_tex_image, 0); + /* If this passes on the first layer it should pass on the others */ + status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER); + if (status != GL_FRAMEBUFFER_COMPLETE) + goto fail; + + _mesa_update_state(ctx); + + if (_mesa_meta_BlitFramebuffer(ctx, xoffset, yoffset, + xoffset + width, yoffset + height, + 0, 0, width, height, + GL_COLOR_BUFFER_BIT, GL_NEAREST)) + goto fail; + + for (int z = 1; z < depth; z++) { + _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + tex_image, zoffset + z); + _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + pbo_tex_image, z); + + _mesa_update_state(ctx); + + _mesa_meta_BlitFramebuffer(ctx, xoffset, yoffset, + xoffset + width, yoffset + height, + 0, 0, width, height, + GL_COLOR_BUFFER_BIT, GL_NEAREST); + } + + success = true; + +fail: + _mesa_DeleteFramebuffers(2, fbos); + _mesa_DeleteTextures(1, &pbo_tex); + _mesa_DeleteBuffers(1, &pbo); + + _mesa_meta_end(ctx); + + return success; +} |