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st/mesa: simplify conditionals in Clear

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just check depth and stencil separately, the outcome is the same

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Marek Olšák 2013-01-14 08:16:18 +01:00
parent 01b7124788
commit f94ea25a4a
1 changed files with 12 additions and 30 deletions
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42
src/mesa/state_tracker/st_cb_clear.c
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@ -380,8 +380,6 @@ is_stencil_masked(struct gl_context *ctx, struct gl_renderbuffer *rb)
static void
st_Clear(struct gl_context *ctx, GLbitfield mask)
{
static const GLbitfield BUFFER_BITS_DS
= (BUFFER_BIT_DEPTH | BUFFER_BIT_STENCIL);
struct st_context *st = st_context(ctx);
struct gl_renderbuffer *depthRb
= ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
@ -416,41 +414,25 @@ st_Clear(struct gl_context *ctx, GLbitfield mask)
}
}
if ((mask & BUFFER_BITS_DS) == BUFFER_BITS_DS && depthRb == stencilRb) {
/* clearing combined depth + stencil */
if (mask & BUFFER_BIT_DEPTH) {
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (strb->surface) {
if (is_scissor_enabled(ctx, depthRb) ||
is_stencil_masked(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
if (is_scissor_enabled(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTH;
else
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
clear_buffers |= PIPE_CLEAR_DEPTH;
}
}
else {
/* separate depth/stencil clears */
/* I don't think truly separate buffers are actually possible in gallium or hw? */
if (mask & BUFFER_BIT_DEPTH) {
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
if (mask & BUFFER_BIT_STENCIL) {
struct st_renderbuffer *strb = st_renderbuffer(stencilRb);
if (strb->surface) {
if (is_scissor_enabled(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTH;
else
clear_buffers |= PIPE_CLEAR_DEPTH;
}
}
if (mask & BUFFER_BIT_STENCIL) {
struct st_renderbuffer *strb = st_renderbuffer(stencilRb);
if (strb->surface) {
if (is_scissor_enabled(ctx, stencilRb) ||
is_stencil_masked(ctx, stencilRb))
quad_buffers |= PIPE_CLEAR_STENCIL;
else
clear_buffers |= PIPE_CLEAR_STENCIL;
}
if (strb->surface) {
if (is_scissor_enabled(ctx, stencilRb) ||
is_stencil_masked(ctx, stencilRb))
quad_buffers |= PIPE_CLEAR_STENCIL;
else
clear_buffers |= PIPE_CLEAR_STENCIL;
}
}