/*
* Mesa 3-D graphics library
- * Version: 6.5.2
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
*/
-#include "glheader.h"
-#include "macros.h"
+#include "main/glheader.h"
+#include "main/macros.h"
#include "s_context.h"
#include "s_masking.h"
* Apply the color mask to a span of rgba values.
*/
void
-_swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb,
- struct sw_span *span)
+_swrast_mask_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
+ SWspan *span, GLuint buf)
{
- GLchan dest[MAX_WIDTH][4];
-#if CHAN_BITS == 8
- GLuint srcMask = *((GLuint*)ctx->Color.ColorMask);
- GLuint dstMask = ~srcMask;
- GLuint *rgba32 = (GLuint *) span->array->rgba;
- GLuint *dest32 = (GLuint *) dest;
-#else
- const GLboolean rMask = ctx->Color.ColorMask[RCOMP];
- const GLboolean gMask = ctx->Color.ColorMask[GCOMP];
- const GLboolean bMask = ctx->Color.ColorMask[BCOMP];
- const GLboolean aMask = ctx->Color.ColorMask[ACOMP];
-#endif
const GLuint n = span->end;
- GLuint i;
+ void *rbPixels;
- ASSERT(n < MAX_WIDTH);
- ASSERT(span->arrayMask & SPAN_RGBA);
+ assert(n < SWRAST_MAX_WIDTH);
+ assert(span->arrayMask & SPAN_RGBA);
- if (span->arrayMask & SPAN_XY) {
- _swrast_get_values(ctx, rb, n, span->array->x, span->array->y,
- dest, 4 * sizeof(GLchan));
- }
- else {
- _swrast_read_rgba_span(ctx, rb, n, span->x, span->y, dest);
- }
+ rbPixels = _swrast_get_dest_rgba(ctx, rb, span);
-#if CHAN_BITS == 8
- for (i = 0; i < n; i++) {
- rgba32[i] = (rgba32[i] & srcMask) | (dest32[i] & dstMask);
+ /*
+ * Do component masking.
+ * Note that we're not using span->array->mask[] here. We could...
+ */
+ if (span->array->ChanType == GL_UNSIGNED_BYTE) {
+ GLuint srcMask;
+ memcpy(&srcMask, ctx->Color.ColorMask[buf], sizeof(srcMask));
+ const GLuint dstMask = ~srcMask;
+ const GLuint *dst = (const GLuint *) rbPixels;
+ GLuint *src = (GLuint *) span->array->rgba8;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ src[i] = (src[i] & srcMask) | (dst[i] & dstMask);
+ }
}
-#else
- for (i = 0; i < n; i++) {
- if (!rMask) span->array->rgba[i][RCOMP] = dest[i][RCOMP];
- if (!gMask) span->array->rgba[i][GCOMP] = dest[i][GCOMP];
- if (!bMask) span->array->rgba[i][BCOMP] = dest[i][BCOMP];
- if (!aMask) span->array->rgba[i][ACOMP] = dest[i][ACOMP];
- }
-#endif
-}
-
-
-/**
- * Apply the index mask to a span of color index values.
- */
-void
-_swrast_mask_ci_span(GLcontext *ctx, struct gl_renderbuffer *rb,
- struct sw_span *span)
-{
- const GLuint srcMask = ctx->Color.IndexMask;
- const GLuint dstMask = ~srcMask;
- GLuint *index = span->array->index;
- GLuint dest[MAX_WIDTH];
- GLuint i;
-
- ASSERT(span->arrayMask & SPAN_INDEX);
- ASSERT(span->end <= MAX_WIDTH);
- ASSERT(rb->DataType == GL_UNSIGNED_INT);
-
- if (span->arrayMask & SPAN_XY) {
- _swrast_get_values(ctx, rb, span->end, span->array->x, span->array->y,
- dest, sizeof(GLuint));
+ else if (span->array->ChanType == GL_UNSIGNED_SHORT) {
+ /* 2-byte components */
+ /* XXX try to use 64-bit arithmetic someday */
+ const GLushort rMask = ctx->Color.ColorMask[buf][RCOMP] ? 0xffff : 0x0;
+ const GLushort gMask = ctx->Color.ColorMask[buf][GCOMP] ? 0xffff : 0x0;
+ const GLushort bMask = ctx->Color.ColorMask[buf][BCOMP] ? 0xffff : 0x0;
+ const GLushort aMask = ctx->Color.ColorMask[buf][ACOMP] ? 0xffff : 0x0;
+ const GLushort (*dst)[4] = (const GLushort (*)[4]) rbPixels;
+ GLushort (*src)[4] = span->array->rgba16;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ src[i][RCOMP] = (src[i][RCOMP] & rMask) | (dst[i][RCOMP] & ~rMask);
+ src[i][GCOMP] = (src[i][GCOMP] & gMask) | (dst[i][GCOMP] & ~gMask);
+ src[i][BCOMP] = (src[i][BCOMP] & bMask) | (dst[i][BCOMP] & ~bMask);
+ src[i][ACOMP] = (src[i][ACOMP] & aMask) | (dst[i][ACOMP] & ~aMask);
+ }
}
else {
- _swrast_read_index_span(ctx, rb, span->end, span->x, span->y, dest);
- }
-
- for (i = 0; i < span->end; i++) {
- index[i] = (index[i] & srcMask) | (dest[i] & dstMask);
+ /* 4-byte components */
+ const GLuint rMask = ctx->Color.ColorMask[buf][RCOMP] ? ~0x0 : 0x0;
+ const GLuint gMask = ctx->Color.ColorMask[buf][GCOMP] ? ~0x0 : 0x0;
+ const GLuint bMask = ctx->Color.ColorMask[buf][BCOMP] ? ~0x0 : 0x0;
+ const GLuint aMask = ctx->Color.ColorMask[buf][ACOMP] ? ~0x0 : 0x0;
+ const GLuint (*dst)[4] = (const GLuint (*)[4]) rbPixels;
+ GLuint (*src)[4] = (GLuint (*)[4]) span->array->attribs[VARYING_SLOT_COL0];
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ src[i][RCOMP] = (src[i][RCOMP] & rMask) | (dst[i][RCOMP] & ~rMask);
+ src[i][GCOMP] = (src[i][GCOMP] & gMask) | (dst[i][GCOMP] & ~gMask);
+ src[i][BCOMP] = (src[i][BCOMP] & bMask) | (dst[i][BCOMP] & ~bMask);
+ src[i][ACOMP] = (src[i][ACOMP] & aMask) | (dst[i][ACOMP] & ~aMask);
+ }
}
}