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intel: Define functions intel_texture_s8z24_scatter/gather

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... which copy the stencil bits between intel_image->depth_rb and
intel_image->stencil_rb.

Signed-off-by: Chad Versace <chad@chad-versace.us>
This commit is contained in:
Chad Versace 2011-06-21 22:58:39 -07:00
parent 1a062dfc6f
commit 01e493980c
1 changed files with 70 additions and 0 deletions
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70
src/mesa/drivers/dri/intel/intel_tex_image.c
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@ -21,6 +21,7 @@
#include "intel_tex.h"
#include "intel_blit.h"
#include "intel_fbo.h"
#include "intel_span.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
@ -277,6 +278,75 @@ try_pbo_zcopy(struct intel_context *intel,
return GL_TRUE;
}
/**
* \param scatter Scatter if true. Gather if false.
*
* \see intel_tex_image_x8z24_scatter
* \see intel_tex_image_x8z24_gather
*/
static void
intel_tex_image_s8z24_scattergather(struct intel_context *intel,
struct intel_texture_image *intel_image,
bool scatter)
{
struct gl_context *ctx = &intel->ctx;
struct gl_renderbuffer *depth_rb = intel_image->depth_rb;
struct gl_renderbuffer *stencil_rb = intel_image->stencil_rb;
int w = intel_image->base.Width;
int h = intel_image->base.Height;
uint32_t depth_row[w];
uint8_t stencil_row[w];
intel_renderbuffer_map(intel, depth_rb);
intel_renderbuffer_map(intel, stencil_rb);
if (scatter) {
for (int y = 0; y < h; ++y) {
depth_rb->GetRow(ctx, depth_rb, w, 0, y, depth_row);
for (int x = 0; x < w; ++x) {
stencil_row[x] = depth_row[x] >> 24;
}
stencil_rb->PutRow(ctx, stencil_rb, w, 0, y, stencil_row, NULL);
}
} else { /* gather */
for (int y = 0; y < h; ++y) {
depth_rb->GetRow(ctx, depth_rb, w, 0, y, depth_row);
stencil_rb->GetRow(ctx, stencil_rb, w, 0, y, stencil_row);
for (int x = 0; x < w; ++x) {
uint32_t s8_x24 = stencil_row[x] << 24;
uint32_t x8_z24 = depth_row[x] & 0x00ffffff;
depth_row[x] = s8_x24 | x8_z24;
}
depth_rb->PutRow(ctx, depth_rb, w, 0, y, depth_row, NULL);
}
}
intel_renderbuffer_unmap(intel, depth_rb);
intel_renderbuffer_unmap(intel, stencil_rb);
}
/**
* Copy the x8 bits from intel_image->depth_rb to intel_image->stencil_rb.
*/
static void
intel_tex_image_s8z24_scatter(struct intel_context *intel,
struct intel_texture_image *intel_image)
{
intel_tex_image_s8z24_scattergather(intel, intel_image, true);
}
/**
* Copy the data in intel_image->stencil_rb to the x8 bits in
* intel_image->depth_rb.
*/
static void
intel_tex_image_s8z24_gather(struct intel_context *intel,
struct intel_texture_image *intel_image)
{
intel_tex_image_s8z24_scattergather(intel, intel_image, false);
}
static void
intelTexImage(struct gl_context * ctx,