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code re-org, minor improvements

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This commit is contained in:
Brian 2007-08-24 19:36:23 -06:00
parent b4a8175da0
commit def8bb784c
1 changed files with 58 additions and 6 deletions
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64
src/mesa/state_tracker/st_cb_clear.c
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@ -93,6 +93,7 @@ depth_value(GLuint pipeFormat, GLfloat value)
val = (GLuint) (value * 0xffffff);
break;
default:
val = 0;
assert(0);
}
return val;
@ -402,6 +403,52 @@ clear_with_quad(GLcontext *ctx,
}
/**
* Determine if we need to clear the depth buffer by drawing a quad.
*/
static INLINE GLboolean
check_clear_color_with_quad(GLcontext *ctx)
{
return !(ctx->Color.ColorMask[0] &&
ctx->Color.ColorMask[1] &&
ctx->Color.ColorMask[2] &&
ctx->Color.ColorMask[3] &&
!ctx->Scissor.Enabled);
}
/**
* Determine if we need to clear the depth buffer by drawing a quad.
*/
static INLINE GLboolean
check_clear_depth_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb)
{
const struct st_renderbuffer *strb = st_renderbuffer(rb);
const GLboolean isDS = is_depth_stencil_format(strb->surface->format);
return ctx->Scissor.Enabled
|| (isDS && ctx->DrawBuffer->Visual.stencilBits > 0);
}
/**
* Determine if we need to clear the stencil buffer by drawing a quad.
*/
static INLINE GLboolean
check_clear_stencil_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb)
{
const struct st_renderbuffer *strb = st_renderbuffer(rb);
const GLboolean isDS = is_depth_stencil_format(strb->surface->format);
const GLuint stencilMax = (1 << rb->StencilBits) - 1;
const GLboolean maskStencil
= (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax;
return maskStencil
|| ctx->Scissor.Enabled
|| (isDS && ctx->DrawBuffer->Visual.depthBits > 0);
}
static void
clear_color_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
{
@ -474,7 +521,8 @@ clear_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
struct st_renderbuffer *strb = st_renderbuffer(rb);
const GLboolean isDS = is_depth_stencil_format(strb->surface->format);
const GLuint stencilMax = (1 << rb->StencilBits) - 1;
GLboolean maskStencil = ctx->Stencil.WriteMask[0] != stencilMax;
GLboolean maskStencil
= (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax;
if (maskStencil ||
ctx->Scissor.Enabled ||
@ -494,8 +542,9 @@ static void
clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
{
struct st_renderbuffer *strb = st_renderbuffer(rb);
const GLuint stencilMax = 1 << rb->StencilBits;
GLboolean maskStencil = ctx->Stencil.WriteMask[0] != stencilMax;
const GLuint stencilMax = (1 << rb->StencilBits) - 1;
GLboolean maskStencil
= (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax;
assert(is_depth_stencil_format(strb->surface->format));
@ -540,6 +589,7 @@ static void st_clear(GLcontext *ctx, GLbitfield mask)
= ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
struct gl_renderbuffer *stencilRb
= ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
GLbitfield cmask = mask & BUFFER_BITS_COLOR;
/* This makes sure the softpipe has the latest scissor, etc values */
st_validate_state( st );
@ -552,15 +602,17 @@ static void st_clear(GLcontext *ctx, GLbitfield mask)
* color/depth/stencil individually...
*/
if (mask & BUFFER_BITS_COLOR) {
if (cmask) {
GLuint b;
for (b = 0; b < BUFFER_COUNT; b++) {
if (BUFFER_BITS_COLOR & mask & (1 << b)) {
for (b = 0; cmask; b++) {
if (cmask & (1 << b)) {
struct gl_renderbuffer *rb
= ctx->DrawBuffer->Attachment[b].Renderbuffer;
assert(rb);
clear_color_buffer(ctx, rb);
cmask &= ~(1 << b); /* turn off bit */
}
assert(b < BUFFER_COUNT);
}
}