/**
* Called via the device driver's ctx->Driver.Clear() function if the
* device driver can't clear one or more of the buffers itself.
* \param mask bitfield of BUFER_BIT_* values indicating which renderbuffers
* are to be cleared.
* \param all if GL_TRUE, clear whole buffer, else clear specified region.
*/
void
_swrast_Clear(GLcontext *ctx, GLbitfield mask,
GLboolean all, GLint x, GLint y, GLint width, GLint height)
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
(void) all;
(void) x;
(void) y;
(void) width;
(void) height;
#ifdef DEBUG_FOO
{
const GLbitfield legalBits =
BUFFER_BIT_FRONT_LEFT |
BUFFER_BIT_FRONT_RIGHT |
BUFFER_BIT_BACK_LEFT |
BUFFER_BIT_BACK_RIGHT |
BUFFER_BIT_DEPTH |
BUFFER_BIT_STENCIL |
BUFFER_BIT_ACCUM |
BUFFER_BIT_AUX0 |
BUFFER_BIT_AUX1 |
BUFFER_BIT_AUX2 |
BUFFER_BIT_AUX3;
assert((mask & (~legalBits)) == 0);
}
#endif
RENDER_START(swrast,ctx);
/* do software clearing here */
if (mask) {
if (mask & ctx->DrawBuffer->_ColorDrawBufferMask[0]) {
clear_color_buffers(ctx);
}
if (mask & BUFFER_BIT_DEPTH) {
_swrast_clear_depth_buffer(ctx, ctx->DrawBuffer->_DepthBuffer);
}
if (mask & BUFFER_BIT_ACCUM) {
_swrast_clear_accum_buffer(ctx,
ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);
}
if (mask & BUFFER_BIT_STENCIL) {
_swrast_clear_stencil_buffer(ctx, ctx->DrawBuffer->_StencilBuffer);
}
}
RENDER_FINISH(swrast,ctx);
}
/**
* Called via the device driver's ctx->Driver.Clear() function if the
* device driver can't clear one or more of the buffers itself.
* \param buffers bitfield of BUFFER_BIT_* values indicating which
* renderbuffers are to be cleared.
* \param all if GL_TRUE, clear whole buffer, else clear specified region.
*/
void
_swrast_Clear(GLcontext *ctx, GLbitfield buffers)
{
#ifdef DEBUG_FOO
{
const GLbitfield legalBits =
BUFFER_BIT_FRONT_LEFT |
BUFFER_BIT_FRONT_RIGHT |
BUFFER_BIT_BACK_LEFT |
BUFFER_BIT_BACK_RIGHT |
BUFFER_BIT_DEPTH |
BUFFER_BIT_STENCIL |
BUFFER_BIT_ACCUM |
BUFFER_BIT_AUX0;
assert((buffers & (~legalBits)) == 0);
}
#endif
swrast_render_start(ctx);
/* do software clearing here */
if (buffers) {
if ((buffers & BUFFER_BITS_COLOR)
&& (ctx->DrawBuffer->_NumColorDrawBuffers > 0)) {
clear_color_buffers(ctx);
}
if (buffers & BUFFER_BIT_DEPTH) {
_swrast_clear_depth_buffer(ctx, ctx->DrawBuffer->_DepthBuffer);
}
if (buffers & BUFFER_BIT_ACCUM) {
_swrast_clear_accum_buffer(ctx,
ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);
}
if (buffers & BUFFER_BIT_STENCIL) {
_swrast_clear_stencil_buffer(ctx, ctx->DrawBuffer->_StencilBuffer);
}
}
swrast_render_finish(ctx);
}
