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swrast: Don't do Z24S8 drawpixels fast-paths with Z32_X24S8 input data.

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The cool part was that in the "fbo-depthstencil -drawpixels
GL_DEPTH24_STENCIL8 32F_24_8_REV" testcase, the shifting happened to
end up with a value awfully close to the expected value, except for
every other pixel being 0 (the stencil value, shifted away to
nothing).

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Eric Anholt 2011-12-02 17:32:53 -08:00
parent 5d1de8bc7d
commit 657f3214e7
1 changed files with 4 additions and 2 deletions
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6
src/mesa/swrast/s_drawpix.c
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@ -625,7 +625,8 @@ draw_depth_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
GL_DEPTH_STENCIL_EXT, type, i, 0);
if (ctx->Depth.Mask) {
if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24) {
if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24 &&
type == GL_UNSIGNED_INT_24_8) {
/* fast path 24-bit zbuffer */
GLuint zValues[MAX_WIDTH];
GLint j;
@ -639,7 +640,8 @@ draw_depth_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
else
depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
}
else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16) {
else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16 &&
type == GL_UNSIGNED_INT_24_8) {
/* fast path 16-bit zbuffer */
GLushort zValues[MAX_WIDTH];
GLint j;