diff options
| -rw-r--r-- | src/mesa/main/fbobject.c | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c index d4400709aef..2230b262336 100644 --- a/src/mesa/main/fbobject.c +++ b/src/mesa/main/fbobject.c @@ -2429,6 +2429,17 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, if (mask & GL_COLOR_BUFFER_BIT) { colorReadRb = readFb->_ColorReadBuffer; colorDrawRb = drawFb->_ColorDrawBuffers[0]; + + /* From the EXT_framebuffer_object spec: + * + * "If a buffer is specified in <mask> and does not exist in both + * the read and draw framebuffers, the corresponding bit is silently + * ignored." + */ + if ((colorReadRb == NULL) || (colorDrawRb == NULL)) { + colorReadRb = colorDrawRb = NULL; + mask &= ~GL_COLOR_BUFFER_BIT; + } } else { colorReadRb = colorDrawRb = NULL; @@ -2437,10 +2448,19 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, if (mask & GL_STENCIL_BUFFER_BIT) { struct gl_renderbuffer *readRb = readFb->_StencilBuffer; struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer; - if (!readRb || - !drawRb || - _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != - _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { + + /* From the EXT_framebuffer_object spec: + * + * "If a buffer is specified in <mask> and does not exist in both + * the read and draw framebuffers, the corresponding bit is silently + * ignored." + */ + if ((readRb == NULL) || (drawRb == NULL)) { + readRb = drawRb = NULL; + mask &= ~GL_STENCIL_BUFFER_BIT; + } + else if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != + _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT(stencil buffer size mismatch)"); return; @@ -2450,10 +2470,19 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, if (mask & GL_DEPTH_BUFFER_BIT) { struct gl_renderbuffer *readRb = readFb->_DepthBuffer; struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer; - if (!readRb || - !drawRb || - _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != - _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) { + + /* From the EXT_framebuffer_object spec: + * + * "If a buffer is specified in <mask> and does not exist in both + * the read and draw framebuffers, the corresponding bit is silently + * ignored." + */ + if ((readRb == NULL) || (drawRb == NULL)) { + readRb = drawRb = NULL; + mask &= ~GL_DEPTH_BUFFER_BIT; + } + else if (_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != + _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT(depth buffer size mismatch)"); return; |