diff options
Diffstat (limited to 'src/mesa/main/blit.c')
| -rw-r--r-- | src/mesa/main/blit.c | 138 |
1 files changed, 77 insertions, 61 deletions
diff --git a/src/mesa/main/blit.c b/src/mesa/main/blit.c index be5e4f109a4..12258e89b9d 100644 --- a/src/mesa/main/blit.c +++ b/src/mesa/main/blit.c @@ -177,6 +177,81 @@ is_valid_blit_filter(const struct gl_context *ctx, GLenum filter) } +static bool +validate_color_buffer(struct gl_context *ctx, struct gl_framebuffer *readFb, + struct gl_framebuffer *drawFb, GLenum filter, + const char *func) +{ + const GLuint numColorDrawBuffers = drawFb->_NumColorDrawBuffers; + const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer; + const struct gl_renderbuffer *colorDrawRb = NULL; + GLuint i; + + for (i = 0; i < numColorDrawBuffers; i++) { + colorDrawRb = drawFb->_ColorDrawBuffers[i]; + if (!colorDrawRb) + continue; + + /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL + * ES 3.0.1 spec says: + * + * "If the source and destination buffers are identical, an + * INVALID_OPERATION error is generated. Different mipmap levels of a + * texture, different layers of a three- dimensional texture or + * two-dimensional array texture, and different faces of a cube map + * texture do not constitute identical buffers." + */ + if (_mesa_is_gles3(ctx) && (colorDrawRb == colorReadRb)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(source and destination color buffer cannot be the " + "same)", func); + return false; + } + + if (!compatible_color_datatypes(colorReadRb->Format, + colorDrawRb->Format)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(color buffer datatypes mismatch)", func); + return false; + } + + /* extra checks for multisample copies... */ + if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { + /* color formats must match on GLES. This isn't checked on desktop GL + * because the GL 4.4 spec was changed to allow it. In the section + * entitled “Changes in the released + * Specification of July 22, 2013” it says: + * + * “Relax BlitFramebuffer in section 18.3.1 so that format conversion + * can take place during multisample blits, since drivers already + * allow this and some apps depend on it.” + */ + if (_mesa_is_gles(ctx) && + !compatible_resolve_formats(colorReadRb, colorDrawRb)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(bad src/dst multisample pixel formats)", func); + return false; + } + } + + } + + if (filter != GL_NEAREST) { + /* From EXT_framebuffer_multisample_blit_scaled specification: + * "Calling BlitFramebuffer will result in an INVALID_OPERATION error if + * filter is not NEAREST and read buffer contains integer data." + */ + GLenum type = _mesa_get_format_datatype(colorReadRb->Format); + if (type == GL_INT || type == GL_UNSIGNED_INT) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "%s(integer color type)", func); + return false; + } + } + return true; +} + + static ALWAYS_INLINE void blit_framebuffer(struct gl_context *ctx, struct gl_framebuffer *readFb, struct gl_framebuffer *drawFb, @@ -298,8 +373,6 @@ blit_framebuffer(struct gl_context *ctx, if (mask & GL_COLOR_BUFFER_BIT) { const GLuint numColorDrawBuffers = drawFb->_NumColorDrawBuffers; const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer; - const struct gl_renderbuffer *colorDrawRb = NULL; - GLuint i; /* From the EXT_framebuffer_object spec: * @@ -310,65 +383,8 @@ blit_framebuffer(struct gl_context *ctx, if (!colorReadRb || numColorDrawBuffers == 0) { mask &= ~GL_COLOR_BUFFER_BIT; } else if (!no_error) { - for (i = 0; i < numColorDrawBuffers; i++) { - colorDrawRb = drawFb->_ColorDrawBuffers[i]; - if (!colorDrawRb) - continue; - - /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL - * ES 3.0.1 spec says: - * - * "If the source and destination buffers are identical, an - * INVALID_OPERATION error is generated. Different mipmap - * levels of a texture, different layers of a three- - * dimensional texture or two-dimensional array texture, and - * different faces of a cube map texture do not constitute - * identical buffers." - */ - if (_mesa_is_gles3(ctx) && (colorDrawRb == colorReadRb)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(source and destination color " - "buffer cannot be the same)", func); - return; - } - - if (!compatible_color_datatypes(colorReadRb->Format, - colorDrawRb->Format)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(color buffer datatypes mismatch)", func); - return; - } - /* extra checks for multisample copies... */ - if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { - /* color formats must match on GLES. This isn't checked on - * desktop GL because the GL 4.4 spec was changed to allow it. - * In the section entitled “Changes in the released - * Specification of July 22, 2013” it says: - * - * “Relax BlitFramebuffer in section 18.3.1 so that format - * conversion can take place during multisample blits, since - * drivers already allow this and some apps depend on it.” - */ - if (_mesa_is_gles(ctx) && - !compatible_resolve_formats(colorReadRb, colorDrawRb)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(bad src/dst multisample pixel formats)", func); - return; - } - } - } - if (filter != GL_NEAREST) { - /* From EXT_framebuffer_multisample_blit_scaled specification: - * "Calling BlitFramebuffer will result in an INVALID_OPERATION error - * if filter is not NEAREST and read buffer contains integer data." - */ - GLenum type = _mesa_get_format_datatype(colorReadRb->Format); - if (type == GL_INT || type == GL_UNSIGNED_INT) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "%s(integer color type)", func); - return; - } - } + if (!validate_color_buffer(ctx, readFb, drawFb, filter, func)) + return; } } |