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-rw-r--r--src/mesa/main/buffers.c204
1 files changed, 6 insertions, 198 deletions
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index c50590f6123..fe0382dfe9a 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -1,4 +1,4 @@
-/* $Id: buffers.c,v 1.17 2000/10/30 16:32:43 brianp Exp $ */
+/* $Id: buffers.c,v 1.18 2000/10/31 18:09:44 keithw Exp $ */
/*
* Mesa 3-D graphics library
@@ -30,7 +30,6 @@
#else
#include "glheader.h"
#include "accum.h"
-#include "alphabuf.h"
#include "buffers.h"
#include "context.h"
#include "depth.h"
@@ -41,6 +40,7 @@
#include "stencil.h"
#include "state.h"
#include "types.h"
+#include "swrast/swrast.h"
#endif
@@ -86,172 +86,12 @@ _mesa_ClearColor( GLclampf red, GLclampf green,
-/*
- * Clear the color buffer when glColorMask or glIndexMask is in effect.
- */
-static void
-clear_color_buffer_with_masking( GLcontext *ctx )
-{
- const GLint x = ctx->DrawBuffer->Xmin;
- const GLint y = ctx->DrawBuffer->Ymin;
- const GLint height = ctx->DrawBuffer->Ymax - ctx->DrawBuffer->Ymin;
- const GLint width = ctx->DrawBuffer->Xmax - ctx->DrawBuffer->Xmin;
-
- if (ctx->Visual.RGBAflag) {
- /* RGBA mode */
- const GLchan r = (GLint) (ctx->Color.ClearColor[0] * CHAN_MAXF);
- const GLchan g = (GLint) (ctx->Color.ClearColor[1] * CHAN_MAXF);
- const GLchan b = (GLint) (ctx->Color.ClearColor[2] * CHAN_MAXF);
- const GLchan a = (GLint) (ctx->Color.ClearColor[3] * CHAN_MAXF);
- GLint i;
- for (i = 0; i < height; i++) {
- GLchan rgba[MAX_WIDTH][4];
- GLint j;
- for (j=0; j<width; j++) {
- rgba[j][RCOMP] = r;
- rgba[j][GCOMP] = g;
- rgba[j][BCOMP] = b;
- rgba[j][ACOMP] = a;
- }
- _mesa_mask_rgba_span( ctx, width, x, y + i, rgba );
- (*ctx->Driver.WriteRGBASpan)( ctx, width, x, y + i,
- (CONST GLchan (*)[4]) rgba, NULL );
- }
- }
- else {
- /* Color index mode */
- GLuint span[MAX_WIDTH];
- GLubyte mask[MAX_WIDTH];
- GLint i, j;
- MEMSET( mask, 1, width );
- for (i=0;i<height;i++) {
- for (j=0;j<width;j++) {
- span[j] = ctx->Color.ClearIndex;
- }
- _mesa_mask_index_span( ctx, width, x, y + i, span );
- (*ctx->Driver.WriteCI32Span)( ctx, width, x, y + i, span, mask );
- }
- }
-}
-
-
-
-/*
- * Clear a color buffer without index/channel masking.
- */
-static void
-clear_color_buffer(GLcontext *ctx)
-{
- const GLint x = ctx->DrawBuffer->Xmin;
- const GLint y = ctx->DrawBuffer->Ymin;
- const GLint height = ctx->DrawBuffer->Ymax - ctx->DrawBuffer->Ymin;
- const GLint width = ctx->DrawBuffer->Xmax - ctx->DrawBuffer->Xmin;
- const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask);
-
- if (ctx->Visual.RGBAflag) {
- /* RGBA mode */
- const GLchan r = (GLint) (ctx->Color.ClearColor[0] * CHAN_MAXF);
- const GLchan g = (GLint) (ctx->Color.ClearColor[1] * CHAN_MAXF);
- const GLchan b = (GLint) (ctx->Color.ClearColor[2] * CHAN_MAXF);
- const GLchan a = (GLint) (ctx->Color.ClearColor[3] * CHAN_MAXF);
- GLchan span[MAX_WIDTH][4];
- GLint i;
-
- ASSERT(colorMask == 0xffffffff);
-
- for (i = 0; i < width; i++) {
- span[i][RCOMP] = r;
- span[i][GCOMP] = g;
- span[i][BCOMP] = b;
- span[i][ACOMP] = a;
- }
- for (i = 0; i < height; i++) {
- (*ctx->Driver.WriteRGBASpan)( ctx, width, x, y + i,
- (CONST GLchan (*)[4]) span, NULL );
- }
- }
- else {
- /* Color index mode */
- ASSERT(ctx->Color.IndexMask == ~0);
- if (ctx->Visual.IndexBits == 8) {
- /* 8-bit clear */
- GLubyte span[MAX_WIDTH];
- GLint i;
- MEMSET(span, ctx->Color.ClearIndex, width);
- for (i = 0; i < height; i++) {
- (*ctx->Driver.WriteCI8Span)( ctx, width, x, y + i, span, NULL );
- }
- }
- else {
- /* non 8-bit clear */
- GLuint span[MAX_WIDTH];
- GLint i;
- for (i = 0; i < width; i++) {
- span[i] = ctx->Color.ClearIndex;
- }
- for (i = 0; i < height; i++) {
- (*ctx->Driver.WriteCI32Span)( ctx, width, x, y + i, span, NULL );
- }
- }
- }
-}
-
-
-
-/*
- * Clear the front/back/left/right color buffers.
- * This function is usually only called if we need to clear the
- * buffers with masking.
- */
-static void
-clear_color_buffers(GLcontext *ctx)
-{
- const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask);
- GLuint bufferBit;
-
- /* loop over four possible dest color buffers */
- for (bufferBit = 1; bufferBit <= 8; bufferBit = bufferBit << 1) {
- if (bufferBit & ctx->Color.DrawDestMask) {
- if (bufferBit == FRONT_LEFT_BIT) {
- (void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_FRONT_LEFT);
- (void) (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer, GL_FRONT_LEFT);
- }
- else if (bufferBit == FRONT_RIGHT_BIT) {
- (void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_FRONT_RIGHT);
- (void) (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer, GL_FRONT_RIGHT);
- }
- else if (bufferBit == BACK_LEFT_BIT) {
- (void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_BACK_LEFT);
- (void) (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer, GL_BACK_LEFT);
- }
- else {
- (void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_BACK_RIGHT);
- (void) (*ctx->Driver.SetReadBuffer)( ctx, ctx->DrawBuffer, GL_BACK_RIGHT);
- }
-
- if (colorMask != 0xffffffff) {
- clear_color_buffer_with_masking(ctx);
- }
- else {
- clear_color_buffer(ctx);
- }
- }
- }
-
- /* restore default read/draw buffers */
- (void) (*ctx->Driver.SetDrawBuffer)( ctx, ctx->Color.DriverDrawBuffer );
- (void) (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer, ctx->Pixel.DriverReadBuffer );
-}
-
void
_mesa_Clear( GLbitfield mask )
{
GET_CURRENT_CONTEXT(ctx);
-#ifdef PROFILE
- GLdouble t0 = gl_time();
-#endif
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glClear");
if (MESA_VERBOSE & VERBOSE_API)
@@ -298,29 +138,9 @@ _mesa_Clear( GLbitfield mask )
}
#endif
- RENDER_START(ctx);
-
- /* do software clearing here */
- if (newMask) {
- if (newMask & ctx->Color.DrawDestMask) clear_color_buffers(ctx);
- if (newMask & GL_DEPTH_BUFFER_BIT) _mesa_clear_depth_buffer(ctx);
- if (newMask & GL_ACCUM_BUFFER_BIT) _mesa_clear_accum_buffer(ctx);
- if (newMask & GL_STENCIL_BUFFER_BIT) _mesa_clear_stencil_buffer(ctx);
- }
-
- /* clear software-based alpha buffer(s) */
- if ( (mask & GL_COLOR_BUFFER_BIT)
- && ctx->DrawBuffer->UseSoftwareAlphaBuffers
- && ctx->Color.ColorMask[ACOMP]) {
- _mesa_clear_alpha_buffers( ctx );
- }
-
- RENDER_FINISH(ctx);
-
-#ifdef PROFILE
- ctx->ClearTime += gl_time() - t0;
- ctx->ClearCount++;
-#endif
+ if (newMask)
+ _swrast_Clear( ctx, newMask, !ctx->Scissor.Enabled,
+ x, y, width, height );
}
}
@@ -561,17 +381,5 @@ _mesa_ResizeBuffersMESA( void )
ctx->DrawBuffer->Width = buf_width;
ctx->DrawBuffer->Height = buf_height;
- /* Reallocate other buffers if needed. */
- if (ctx->DrawBuffer->UseSoftwareDepthBuffer) {
- _mesa_alloc_depth_buffer( ctx );
- }
- if (ctx->DrawBuffer->UseSoftwareStencilBuffer) {
- _mesa_alloc_stencil_buffer( ctx );
- }
- if (ctx->DrawBuffer->UseSoftwareAccumBuffer) {
- _mesa_alloc_accum_buffer( ctx );
- }
- if (ctx->DrawBuffer->UseSoftwareAlphaBuffers) {
- _mesa_alloc_alpha_buffers( ctx );
- }
+ _swrast_alloc_buffers( ctx );
}
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