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new intel_map_unmap_buffers() routine which will eventually be used to map or unmap all renderbuffers which we may need during software rendering

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This commit is contained in:
Brian Paul 2006-03-15 00:17:22 +00:00
parent de2b3506ea
commit 3697eca493
1 changed files with 63 additions and 0 deletions
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63
src/mesa/drivers/dri/i915/intel_span.c
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@ -30,6 +30,7 @@
#include "mtypes.h"
#include "colormac.h"
#include "intel_fbo.h"
#include "intel_screen.h"
#include "intel_span.h"
#include "intel_regions.h"
@ -135,6 +136,68 @@
#include "stenciltmp.h"
/**
* Map or unmap all the renderbuffers which we may need during
* software rendering.
* XXX in the future, we could probably convey extra information to
* reduce the number of mappings needed. I.e. if doing a glReadPixels
* from the depth buffer, we really only need one mapping.
*/
static void
intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
{
GLcontext *ctx = &intel->ctx;
GLuint i, j;
struct intel_renderbuffer *irb;
/* color draw buffers */
for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
for (j = 0; j < ctx->DrawBuffer->_NumColorDrawBuffers[i]; j++) {
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[i][j];
irb = (struct intel_renderbuffer *) rb;
ASSERT(irb);
if (irb->region) {
if (map)
intel_region_map(intel, irb->region);
else
intel_region_unmap(intel, irb->region);
}
}
}
/* color read buffers */
irb = (struct intel_renderbuffer *) ctx->ReadBuffer->_ColorReadBuffer;
if (irb && irb->region) {
if (map)
intel_region_map(intel, irb->region);
else
intel_region_unmap(intel, irb->region);
}
/* depth buffer */
/* XXX wrappers? */
irb = (struct intel_renderbuffer *) ctx->ReadBuffer->_DepthBuffer;
if (irb && irb->region) {
if (map)
intel_region_map(intel, irb->region);
else
intel_region_unmap(intel, irb->region);
}
/* stencil buffer */
irb = (struct intel_renderbuffer *) ctx->ReadBuffer->_StencilBuffer;
if (irb && irb->region) {
if (map)
intel_region_map(intel, irb->region);
else
intel_region_unmap(intel, irb->region);
}
}
/**
* Prepare for softare rendering. Map current read/draw framebuffers'
* renderbuffes and all currently bound texture objects.