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-rw-r--r--src/mesa/main/attrib.c4
-rw-r--r--src/mesa/main/buffers.c72
-rw-r--r--src/mesa/main/buffers.h3
-rw-r--r--src/mesa/main/context.c12
-rw-r--r--src/mesa/main/fbobject.c24
-rw-r--r--src/mesa/main/framebuffer.c3
6 files changed, 77 insertions, 41 deletions
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index 1aa0a02fc7..b422198f92 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -98,9 +98,13 @@ _mesa_PushAttrib(GLbitfield mask)
}
if (mask & GL_COLOR_BUFFER_BIT) {
+ GLuint i;
struct gl_colorbuffer_attrib *attr;
attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
+ /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */
+ for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++)
+ attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i];
newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
newnode->data = attr;
newnode->next = head;
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index 68a0575d93..7764a5d3b2 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -370,6 +370,14 @@ _mesa_DrawBuffer(GLenum buffer)
/* if we get here, there's no error so set new state */
_mesa_drawbuffers(ctx, 1, &buffer, &destMask);
+
+ /*
+ * Call device driver function.
+ */
+ if (ctx->Driver.DrawBuffers)
+ ctx->Driver.DrawBuffers(ctx, 1, &buffer);
+ else if (ctx->Driver.DrawBuffer)
+ ctx->Driver.DrawBuffer(ctx, buffer);
}
@@ -435,6 +443,14 @@ _mesa_DrawBuffersARB(GLsizei n, const GLenum *buffers)
/* OK, if we get here, there were no errors so set the new state */
_mesa_drawbuffers(ctx, n, buffers, destMask);
+
+ /*
+ * Call device driver function.
+ */
+ if (ctx->Driver.DrawBuffers)
+ ctx->Driver.DrawBuffers(ctx, n, buffers);
+ else if (ctx->Driver.DrawBuffer)
+ ctx->Driver.DrawBuffer(ctx, buffers[0]);
}
@@ -463,14 +479,15 @@ set_color_output(GLcontext *ctx, GLuint output, GLenum buffer,
/* not really needed, will be set later */
fb->_NumColorDrawBuffers[output] = 0;
+ if (fb->Name == 0)
/* Set traditional state var */
- ctx->Color.DrawBuffer[output] = buffer;
+ ctx->Color.DrawBuffer[output] = buffer;
}
/**
* Helper routine used by _mesa_DrawBuffer, _mesa_DrawBuffersARB and
- * _mesa_PopAttrib to set drawbuffer state.
+ * other places (window fbo fixup) to set fbo (and the old ctx) fields.
* All error checking will have been done prior to calling this function
* so nothing should go wrong at this point.
* \param ctx current context
@@ -479,6 +496,7 @@ set_color_output(GLcontext *ctx, GLuint output, GLenum buffer,
* \param destMask array[n] of BUFFER_* bitmasks which correspond to the
* colorbuffer names. (i.e. GL_FRONT_AND_BACK =>
* BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT).
+ * \param callDriver call driver or not (bad idea sometimes this is called)
*/
void
_mesa_drawbuffers(GLcontext *ctx, GLuint n, const GLenum *buffers,
@@ -509,30 +527,15 @@ _mesa_drawbuffers(GLcontext *ctx, GLuint n, const GLenum *buffers,
}
ctx->NewState |= _NEW_COLOR;
-
- /*
- * Call device driver function.
- */
- if (ctx->Driver.DrawBuffers)
- ctx->Driver.DrawBuffers(ctx, n, buffers);
- else if (ctx->Driver.DrawBuffer)
- ctx->Driver.DrawBuffer(ctx, buffers[0]);
}
-
-/**
- * Called by glReadBuffer to set the source renderbuffer for reading pixels.
- * \param mode color buffer such as GL_FRONT, GL_BACK, etc.
- */
-void GLAPIENTRY
-_mesa_ReadBuffer(GLenum buffer)
+GLboolean
+_mesa_readbuffer_update_fields(GLcontext *ctx, GLenum buffer)
{
struct gl_framebuffer *fb;
GLbitfield supportedMask;
GLint srcBuffer;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
fb = ctx->ReadBuffer;
@@ -548,20 +551,43 @@ _mesa_ReadBuffer(GLenum buffer)
srcBuffer = read_buffer_enum_to_index(buffer);
if (srcBuffer == -1) {
_mesa_error(ctx, GL_INVALID_ENUM, "glReadBuffer(buffer=0x%x)", buffer);
- return;
+ return GL_FALSE;
}
supportedMask = supported_buffer_bitmask(ctx, fb);
if (((1 << srcBuffer) & supportedMask) == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glReadBuffer(buffer=0x%x)", buffer);
- return;
+ return GL_FALSE;
}
}
- ctx->Pixel.ReadBuffer = buffer;
-
+ if (fb->Name == 0) {
+ ctx->Pixel.ReadBuffer = buffer;
+ }
fb->ColorReadBuffer = buffer;
fb->_ColorReadBufferIndex = srcBuffer;
+ return GL_TRUE;
+}
+
+
+
+/**
+ * Called by glReadBuffer to set the source renderbuffer for reading pixels.
+ * \param mode color buffer such as GL_FRONT, GL_BACK, etc.
+ * \param callDriver call driver or not (bad idea sometimes this is called)
+ */
+void GLAPIENTRY
+_mesa_ReadBuffer(GLenum buffer)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glReadBuffer %s\n", _mesa_lookup_enum_by_nr(buffer));
+
+ if (!_mesa_readbuffer_update_fields(ctx, buffer))
+ return;
+
ctx->NewState |= _NEW_PIXEL;
/*
diff --git a/src/mesa/main/buffers.h b/src/mesa/main/buffers.h
index fcc2152342..208e7af2b9 100644
--- a/src/mesa/main/buffers.h
+++ b/src/mesa/main/buffers.h
@@ -56,6 +56,9 @@ extern void
_mesa_drawbuffers(GLcontext *ctx, GLuint n, const GLenum *buffers,
const GLbitfield *destMask);
+extern GLboolean
+_mesa_readbuffer_update_fields(GLcontext *ctx, GLenum buffer);
+
extern void GLAPIENTRY
_mesa_ReadBuffer( GLenum mode );
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 4e6732dc7a..00e4c8328e 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1496,14 +1496,8 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
if (!newCtx->DrawBuffer || newCtx->DrawBuffer->Name == 0) {
_mesa_reference_framebuffer(&newCtx->DrawBuffer, drawBuffer);
/* fix up the fb fields - these will end up wrong otherwise
- if the DRIdrawable changes, and someone may rely on them.
- */
- /* What a mess!?! */
- /* XXX this is still not quite correct. Imagine a user-created fbo
- bound on a context. Now rebind with a completely new drawable.
- Upon rebinding to the window-framebuffer, we have no idea what
- the read and write buffers should be (front, back, ...) - that
- information was only available in the previously used drawable... */
+ if the DRIdrawable changes, and everything relies on them.
+ This is a bit messy (same as needed in _mesa_BindFramebufferEXT) */
int i;
GLenum buffers[MAX_DRAW_BUFFERS];
for(i = 0; i < newCtx->Const.MaxDrawBuffers; i++) {
@@ -1513,7 +1507,7 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
}
if (!newCtx->ReadBuffer || newCtx->ReadBuffer->Name == 0) {
_mesa_reference_framebuffer(&newCtx->ReadBuffer, readBuffer);
- _mesa_ReadBuffer(newCtx->Pixel.ReadBuffer);
+ _mesa_readbuffer_update_fields(newCtx, newCtx->Pixel.ReadBuffer);
}
newCtx->NewState |= _NEW_BUFFERS;
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index f300e481ce..6f7effcce7 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -29,6 +29,7 @@
*/
+#include "buffers.h"
#include "context.h"
#include "fbobject.h"
#include "framebuffer.h"
@@ -1001,23 +1002,32 @@ _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
* XXX check if re-binding same buffer and skip some of this code.
*/
+ /* for window-framebuffers, re-initialize the fbo values, as they
+ could be wrong (makecurrent with a new drawable while still a fbo
+ was bound will lead to default init fbo values).
+ note that therefore the context ReadBuffer/DrawBuffer values are not
+ valid while fbo's are bound!!! */
if (bindReadBuf) {
_mesa_reference_framebuffer(&ctx->ReadBuffer, newFbread);
- /* set context value */
- ctx->Pixel.ReadBuffer = newFbread->ColorReadBuffer;
+ if (!newFbread->Name) {
+ _mesa_readbuffer_update_fields(ctx, ctx->Pixel.ReadBuffer);
+ }
}
if (bindDrawBuf) {
- GLuint i;
/* check if old FB had any texture attachments */
check_end_texture_render(ctx, ctx->DrawBuffer);
/* check if time to delete this framebuffer */
_mesa_reference_framebuffer(&ctx->DrawBuffer, newFb);
- /* set context value */
- for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
- ctx->Color.DrawBuffer[i] = newFb->ColorDrawBuffer[i];
+ if (!newFb->Name) {
+ GLuint i;
+ GLenum buffers[MAX_DRAW_BUFFERS];
+ for(i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
+ buffers[i] = ctx->Color.DrawBuffer[i];
+ }
+ _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers, buffers, NULL);
}
- if (newFb->Name != 0) {
+ else {
/* check if newly bound framebuffer has any texture attachments */
check_begin_texture_render(ctx, newFb);
}
diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 2ff067164b..c9b30d3252 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -695,8 +695,7 @@ _mesa_update_framebuffer(GLcontext *ctx)
struct gl_framebuffer *fbread = ctx->ReadBuffer;
update_framebuffer(ctx, fb);
- if (fbread != fb && fbread != NULL /* can happen at make_current -
- core/driver circular dependencies, should be fixed up */)
+ if (fbread != fb)
update_framebuffer(ctx, fbread);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-13 18:15:00 +0000