---
src/mesa/swrast/s_clear.c | 234 +++--
1 files changed, 119 insertions(+), 115 deletions(-)
diff --git a/src/mesa/swrast/s_clear.c b/src/mesa/swrast/s_clear.c
index 778911f..30c89bc 100644
--- a/src/mesa/swrast/s_clear.c
+++ b/src/mesa/swrast/s_clear.c
@@ -24,131 +24,149 @@
#include main/glheader.h
#include main/accum.h
-#include main/colormac.h
#include main/condrender.h
+#include main/format_pack.h
#include main/macros.h
#include main/imports.h
#include main/mtypes.h
#include s_context.h
#include s_depth.h
-#include s_masking.h
#include s_stencil.h
/**
- * Clear the color buffer when glColorMask is in effect.
+ * Clear an rgba color buffer with masking if needed.
*/
static void
-clear_rgba_buffer_with_masking(struct gl_context *ctx, struct gl_renderbuffer
*rb,
- GLuint buf)
+clear_rgba_buffer(struct gl_context *ctx, struct gl_renderbuffer *rb,
+ const GLubyte colorMask[4])
{
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;
- SWspan span;
- GLint i;
-
- ASSERT(rb-PutRow);
-
- /* Initialize color span with clear color */
- /* XXX optimize for clearcolor == black/zero (bzero) */
- INIT_SPAN(span, GL_BITMAP);
- span.end = width;
- span.arrayMask = SPAN_RGBA;
- span.array-ChanType = rb-DataType;
- if (span.array-ChanType == GL_UNSIGNED_BYTE) {
- GLubyte clearColor[4];
- _mesa_unclamped_float_rgba_to_ubyte(clearColor, ctx-Color.ClearColor.f);
- for (i = 0; i width; i++) {
- COPY_4UBV(span.array-rgba[i], clearColor);
- }
- }
- else if (span.array-ChanType == GL_UNSIGNED_SHORT) {
- GLushort clearColor[4];
- UNCLAMPED_FLOAT_TO_USHORT(clearColor[RCOMP], ctx-Color.ClearColor.f[0]);
- UNCLAMPED_FLOAT_TO_USHORT(clearColor[GCOMP], ctx-Color.ClearColor.f[1]);
- UNCLAMPED_FLOAT_TO_USHORT(clearColor[BCOMP], ctx-Color.ClearColor.f[2]);
- UNCLAMPED_FLOAT_TO_USHORT(clearColor[ACOMP], ctx-Color.ClearColor.f[3]);
- for (i = 0; i width; i++) {
- COPY_4V_CAST(span.array-rgba[i], clearColor, GLchan);
- }
- }
- else {
- ASSERT(span.array-ChanType == GL_FLOAT);
- for (i = 0; i width; i++) {
- UNCLAMPED_FLOAT_TO_CHAN(span.array-rgba[i][0],
ctx-Color.ClearColor.f[0]);
- UNCLAMPED_FLOAT_TO_CHAN(span.array-rgba[i][1],
ctx-Color.ClearColor.f[1]);
- UNCLAMPED_FLOAT_TO_CHAN(span.array-rgba[i][2],
ctx-Color.ClearColor.f[2]);
- UNCLAMPED_FLOAT_TO_CHAN(span.array-rgba[i][3],
ctx-Color.ClearColor.f[3]);
- }
+ const GLuint pixelSize = _mesa_get_format_bytes(rb-Format);
+ const GLboolean doMasking = (colorMask[0] == 0 ||
+colorMask[1] == 0 ||
+colorMask[2] == 0 ||
+colorMask[3] == 0);
+ const GLfloat (*clearColor)[4] =
+ (const GLfloat (*)[4]) ctx-Color.ClearColor.f;
+ GLfloat maskColor[4];
+ GLubyte *map;
+ GLint rowStride;
+ GLint i, j;
+
+ /* map dest buffer */
+ ctx-Driver.MapRenderbuffer(ctx, rb, x, y, width, height,
+ GL_MAP_WRITE_BIT,
+ map, rowStride);
+ if (!map) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, glClear(color));
+ return;
}
- /* Note that masking will change the color values, but only the
-* channels for which the write mask is GL_FALSE. The channels
-* which which are write-enabled won't get modified.
-*/
- for (i = 0; i height; i++) {
- span.x = x;
- span.y = y + i;
- _swrast_mask_rgba_span(ctx, rb, span, buf);
- /* write masked row */
- rb-PutRow(ctx, rb, width, x, y + i, span.array-rgba, NULL);
+ if (doMasking) {
+ /* Convert the boolean mask to a color */
+ maskColor[0] = colorMask[0] ? 1.0 : 0.0;
+ maskColor[1] = colorMask[1] ? 1.0 : 0.0;
+ maskColor[2] = colorMask[2] ? 1.0 : 0.0;
+ maskColor[3] = colorMask[3] ? 1.0 : 0.0;
}
-}
+ /* for 1, 2, 4-byte clearing */
+#define SIMPLE_TYPE_CLEAR(TYPE) \
+ do { \
+ TYPE pixel, pixelMask;\
+ _mesa_pack_float_rgba_row(rb-Format, 1, clearColor, pixel); \
+ if (doMasking) { \
+ _mesa_pack_float_rgba_row(rb-Format, 1, \
+(const GLfloat (*)[4]) maskColor, pixelMask); \
+ pixel = ~pixelMask; \
+ } \
+ for (i = 0; i height; i++) {\
+ TYPE *row =
