diff options
Diffstat (limited to 'mesalib/src/mesa/main/fbobject.c')
| -rw-r--r-- | mesalib/src/mesa/main/fbobject.c | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c index 2cc791682..3da7a126e 100644 --- a/mesalib/src/mesa/main/fbobject.c +++ b/mesalib/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;
|