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Diffstat (limited to 'src/mesa/swrast/s_span.c')
-rw-r--r--src/mesa/swrast/s_span.c410
1 files changed, 249 insertions, 161 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 4266f085e21..2242a0827d4 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1,4 +1,4 @@
-/* $Id: s_span.c,v 1.28 2002/01/31 00:27:43 brianp Exp $ */
+/* $Id: s_span.c,v 1.29 2002/02/02 17:24:11 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -358,7 +358,7 @@ interpolate_texcoords(GLcontext *ctx, struct sw_span *span)
span->arrayMask |= SPAN_LAMBDA;
}
else {
- /* just texture 0, witout lambda */
+ /* just texture 0, without lambda */
const GLfloat ds = span->texStep[0][0];
const GLfloat dt = span->texStep[0][1];
const GLfloat dr = span->texStep[0][2];
@@ -387,12 +387,15 @@ interpolate_texcoords(GLcontext *ctx, struct sw_span *span)
* Apply the current polygon stipple pattern to a span of pixels.
*/
static void
-stipple_polygon_span( GLcontext *ctx, struct sw_span *span)
+stipple_polygon_span( GLcontext *ctx, struct sw_span *span )
{
const GLuint highbit = 0x80000000;
- GLuint i, m, stipple;
+ const GLuint stipple = ctx->PolygonStipple[span->y % 32];
+ GLuint i, m;
+
+ ASSERT(ctx->Polygon.StippleFlag);
+ ASSERT((span->arrayMask & SPAN_XY) == 0);
- stipple = ctx->PolygonStipple[span->y % 32];
m = highbit >> (GLuint) (span->x % 32);
for (i = 0; i < span->end; i++) {
@@ -409,51 +412,61 @@ stipple_polygon_span( GLcontext *ctx, struct sw_span *span)
/*
- * Clip a pixel span to the current buffer/window boundaries.
- * Return: GL_TRUE some pixel still visible
+ * Clip a pixel span to the current buffer/window boundaries:
+ * DrawBuffer->_Xmin, _Xmax, _Ymin, _Ymax. This will accomplish
+ * window clipping and scissoring.
+ * Return: GL_TRUE some pixels still visible
* GL_FALSE nothing visible
*/
static GLuint
-clip_span( GLcontext *ctx, struct sw_span *span)
+clip_span( GLcontext *ctx, struct sw_span *span )
{
- GLint x = span->x, y = span->y, n = span->end;
-
- /* Clip to top and bottom */
- if (y < 0 || y >= ctx->DrawBuffer->Height) {
- span->end = 0;
- return GL_FALSE;
- }
-
- /* Clip to the left */
- if (x < 0) {
- if (x + n <= 0) {
- /* completely off left side */
- span->end = 0;
- return GL_FALSE;
- }
- else {
- /* partially off left side */
- span->writeAll = GL_FALSE;
- BZERO(span->mask, -x * sizeof(GLubyte));
- return GL_TRUE;
+ const GLint xmin = ctx->DrawBuffer->_Xmin;
+ const GLint xmax = ctx->DrawBuffer->_Xmax;
+ const GLint ymin = ctx->DrawBuffer->_Ymin;
+ const GLint ymax = ctx->DrawBuffer->_Ymax;
+
+ if (span->arrayMask & SPAN_XY) {
+ /* arrays of x/y pixel coords */
+ const GLint *x = span->xArray;
+ const GLint *y = span->yArray;
+ const GLint n = span->end;
+ GLubyte *mask = span->mask;
+ GLint i;
+ /* note: using & intead of && to reduce branches */
+ for (i = 0; i < n; i++) {
+ mask[i] = (x[i] >= xmin) & (x[i] < xmax)
+ & (y[i] >= ymin) & (y[i] < ymax);
}
+ return GL_TRUE; /* some pixels visible */
}
+ else {
+ /* horizontal span of pixels */
+ const GLint x = span->x;
+ const GLint y = span->y;
+ const GLint n = span->end;
+
+ /* Trivial rejection tests */
+ if (y < ymin || y >= ymax || x + n <= xmin || x >= xmax) {
+ span->end = 0;
+ return GL_FALSE; /* all pixels clipped */
+ }
- /* Clip to right */
- if (x + n > ctx->DrawBuffer->Width) {
- if (x >= ctx->DrawBuffer->Width) {
- /* completely off right side */
- span->end = 0;
- return GL_FALSE;
+ /* Clip to the left */
+ if (x < xmin) {
+ ASSERT(x + n > xmin);
+ span->writeAll = GL_FALSE;
+ BZERO(span->mask, (xmin - x) * sizeof(GLubyte));
}
- else {
- /* partially off right side */
- span->end = ctx->DrawBuffer->Width - x;
- return GL_TRUE;
+
+ /* Clip to right */
+ if (x + n > xmax) {
+ ASSERT(x < xmax);
+ span->end = xmax - x;
}
- }
- return GL_TRUE;
+ return GL_TRUE; /* some pixels visible */
+ }
}
@@ -462,20 +475,16 @@ clip_span( GLcontext *ctx, struct sw_span *span)
* Draw to more than one color buffer (or none).
*/
static void
-multi_write_index_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
- const GLuint indexes[], const GLubyte mask[] )
+multi_write_index_span( GLcontext *ctx, struct sw_span *span )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint bufferBit;
- if (ctx->Color.DrawBuffer == GL_NONE)
- return;
-
/* loop over four possible dest color buffers */
for (bufferBit = 1; bufferBit <= 8; bufferBit = bufferBit << 1) {
if (bufferBit & ctx->Color.DrawDestMask) {
GLuint indexTmp[MAX_WIDTH];
- ASSERT(n < MAX_WIDTH);
+ ASSERT(span->end < MAX_WIDTH);
if (bufferBit == FRONT_LEFT_BIT)
(void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_FRONT_LEFT);
@@ -487,14 +496,27 @@ multi_write_index_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
(void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_BACK_RIGHT);
/* make copy of incoming indexes */
- MEMCPY( indexTmp, indexes, n * sizeof(GLuint) );
+ MEMCPY( indexTmp, span->color.index, span->end * sizeof(GLuint) );
+
if (ctx->Color.IndexLogicOpEnabled) {
- _mesa_logicop_ci_span( ctx, n, x, y, indexTmp, mask );
+ _mesa_logicop_ci_span(ctx, span, indexTmp);
}
+
if (ctx->Color.IndexMask != 0xffffffff) {
- _mesa_mask_index_span( ctx, n, x, y, indexTmp );
+ _mesa_mask_index_span(ctx, span, indexTmp);
+ }
+
+ if (span->arrayMask & SPAN_XY) {
+ /* array of pixel coords */
+ (*swrast->Driver.WriteCI32Pixels)(ctx, span->end,
+ span->xArray, span->yArray,
+ indexTmp, span->mask);
+ }
+ else {
+ /* horizontal run of pixels */
+ (*swrast->Driver.WriteCI32Span)(ctx, span->end, span->x, span->y,
+ indexTmp, span->mask);
}
- (*swrast->Driver.WriteCI32Span)( ctx, n, x, y, indexTmp, mask );
}
}
@@ -509,13 +531,14 @@ multi_write_index_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
* have been done first.
*/
static void
-multi_write_rgba_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
- CONST GLchan rgba[][4], const GLubyte mask[] )
+multi_write_rgba_span( GLcontext *ctx, struct sw_span *span )
{
const GLuint colorMask = *((GLuint *) ctx->Color.ColorMask);
GLuint bufferBit;
SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ ASSERT(colorMask != 0x0);
+
if (ctx->Color.DrawBuffer == GL_NONE)
return;
@@ -523,7 +546,7 @@ multi_write_rgba_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
for (bufferBit = 1; bufferBit <= 8; bufferBit = bufferBit << 1) {
if (bufferBit & ctx->Color.DrawDestMask) {
GLchan rgbaTmp[MAX_WIDTH][4];
- ASSERT(n < MAX_WIDTH);
+ ASSERT(span->end < MAX_WIDTH);
if (bufferBit == FRONT_LEFT_BIT) {
(void) (*ctx->Driver.SetDrawBuffer)( ctx, GL_FRONT_LEFT);
@@ -543,26 +566,42 @@ multi_write_rgba_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
}
/* make copy of incoming colors */
- MEMCPY( rgbaTmp, rgba, 4 * n * sizeof(GLchan) );
+ MEMCPY( rgbaTmp, span->color.rgba, 4 * span->end * sizeof(GLchan) );
if (ctx->Color.ColorLogicOpEnabled) {
- _mesa_logicop_rgba_span( ctx, n, x, y, rgbaTmp, mask );
+ _mesa_logicop_rgba_span(ctx, span, rgbaTmp);
}
else if (ctx->Color.BlendEnabled) {
- _mesa_blend_span( ctx, n, x, y, rgbaTmp, mask );
+ _mesa_blend_span(ctx, span, rgbaTmp);
}
- if (colorMask == 0x0) {
- break;
- }
- else if (colorMask != 0xffffffff) {
- _mesa_mask_rgba_span( ctx, n, x, y, rgbaTmp );
+
+ if (colorMask != 0xffffffff) {
+ _mesa_mask_rgba_span(ctx, span, rgbaTmp);
}
- (*swrast->Driver.WriteRGBASpan)( ctx, n, x, y,
- (const GLchan (*)[4]) rgbaTmp, mask );
- if (swrast->_RasterMask & ALPHABUF_BIT) {
- _mesa_write_alpha_span( ctx, n, x, y,
- (const GLchan (*)[4])rgbaTmp, mask );
+ if (span->arrayMask & SPAN_XY) {
+ /* array of pixel coords */
+ (*swrast->Driver.WriteRGBAPixels)(ctx, span->end,
+ span->xArray, span->yArray,
+ (const GLchan (*)[4]) rgbaTmp,
+ span->mask);
+ if (SWRAST_CONTEXT(ctx)->_RasterMask & ALPHABUF_BIT) {
+ _mesa_write_alpha_pixels(ctx, span->end,
+ span->xArray, span->yArray,
+ (const GLchan (*)[4]) rgbaTmp,
+ span->mask);
+ }
+ }
+ else {
+ /* horizontal run of pixels */
+ (*swrast->Driver.WriteRGBASpan)(ctx, span->end, span->x, span->y,
+ (const GLchan (*)[4]) rgbaTmp,
+ span->mask);
+ if (swrast->_RasterMask & ALPHABUF_BIT) {
+ _mesa_write_alpha_span(ctx, span->end, span->x, span->y,
+ (const GLchan (*)[4]) rgbaTmp,
+ span->mask);
+ }
}
}
}
@@ -586,27 +625,29 @@ _mesa_write_index_span( GLcontext *ctx, struct sw_span *span,
const GLuint origInterpMask = span->interpMask;
const GLuint origArrayMask = span->arrayMask;
+ ASSERT(span->end <= MAX_WIDTH);
+ ASSERT((span->interpMask | span->arrayMask) & SPAN_INDEX);
ASSERT((span->interpMask & span->arrayMask) == 0);
- MEMSET(span->mask, 1, span->end);
- span->writeAll = GL_TRUE;
-
- /* Window clipping */
- if ((swrast->_RasterMask & WINCLIP_BIT) || primitive==GL_BITMAP) {
- if (clip_span(ctx,span) == GL_FALSE) {
- return;
- }
+ if (span->arrayMask & SPAN_MASK) {
+ /* mask was initialized by caller, probably glBitmap */
+ span->writeAll = GL_FALSE;
+ }
+ else {
+ MEMSET(span->mask, 1, span->end);
+ span->writeAll = GL_TRUE;
}
- /* Scissor test */
- if (ctx->Scissor.Enabled) {
- if (_mesa_scissor_span( ctx, span ) == GL_FALSE) {
+ /* Clipping */
+ if ((swrast->_RasterMask & CLIP_BIT) || (primitive == GL_BITMAP)
+ || (primitive == GL_POINT)) {
+ if (!clip_span(ctx, span)) {
return;
}
}
/* Polygon Stippling */
- if (ctx->Polygon.StippleFlag && primitive==GL_POLYGON) {
+ if (ctx->Polygon.StippleFlag && primitive == GL_POLYGON) {
stipple_polygon_span(ctx, span);
}
@@ -671,31 +712,46 @@ _mesa_write_index_span( GLcontext *ctx, struct sw_span *span,
if (swrast->_RasterMask & MULTI_DRAW_BIT) {
/* draw to zero or two or more buffers */
- multi_write_index_span( ctx, span->end, span->x, span->y,
- span->color.index, span->mask );
+ multi_write_index_span(ctx, span);
}
else {
/* normal situation: draw to exactly one buffer */
if (ctx->Color.IndexLogicOpEnabled) {
- _mesa_logicop_ci_span( ctx, span->end, span->x, span->y,
- span->color.index, span->mask );
+ _mesa_logicop_ci_span(ctx, span, span->color.index);
}
if (ctx->Color.IndexMask != 0xffffffff) {
- _mesa_mask_index_span( ctx, span->end, span->x, span->y,
- span->color.index );
+ _mesa_mask_index_span(ctx, span, span->color.index);
}
/* write pixels */
- if ((span->interpMask & SPAN_INDEX) && span->indexStep == 0) {
- /* all pixels have same color index */
- (*swrast->Driver.WriteMonoCISpan)( ctx, span->end, span->x, span->y,
- FixedToInt(span->index),
- span->mask );
+ if (span->arrayMask & SPAN_XY) {
+ /* array of pixel coords */
+ if ((span->interpMask & SPAN_INDEX) && span->indexStep == 0) {
+ /* all pixels have same color index */
+ (*swrast->Driver.WriteMonoCIPixels)(ctx, span->end,
+ span->xArray, span->yArray,
+ FixedToInt(span->index),
+ span->mask);
+ }
+ else {
+ (*swrast->Driver.WriteCI32Pixels)(ctx, span->end, span->xArray,
+ span->yArray, span->color.index,
+ span->mask );
+ }
}
else {
- (*swrast->Driver.WriteCI32Span)( ctx, span->end, span->x, span->y,
- span->color.index, span->mask );
+ /* horizontal run of pixels */
+ if ((span->interpMask & SPAN_INDEX) && span->indexStep == 0) {
+ /* all pixels have same color index */
+ (*swrast->Driver.WriteMonoCISpan)(ctx, span->end, span->x, span->y,
+ FixedToInt(span->index),
+ span->mask);
+ }
+ else {
+ (*swrast->Driver.WriteCI32Span)(ctx, span->end, span->x, span->y,
+ span->color.index, span->mask);
+ }
}
}
@@ -719,27 +775,34 @@ _mesa_write_rgba_span( GLcontext *ctx, struct sw_span *span,
const GLuint origArrayMask = span->arrayMask;
GLboolean monoColor;
+ ASSERT(span->end <= MAX_WIDTH);
ASSERT((span->interpMask & span->arrayMask) == 0);
ASSERT((span->interpMask | span->arrayMask) & SPAN_RGBA);
+ if (ctx->Fog.Enabled)
+ ASSERT((span->interpMask | span->arrayMask) & SPAN_FOG);
+
+ /*
+ printf("%s() interp 0x%x array 0x%x p=0x%x\n", __FUNCTION__, span->interpMask, span->arrayMask, primitive);
+ */
- MEMSET(span->mask, 1, span->end);
- span->writeAll = GL_TRUE;
+ if (span->arrayMask & SPAN_MASK) {
+ /* mask was initialized by caller, probably glBitmap */
+ span->writeAll = GL_FALSE;
+ }
+ else {
+ MEMSET(span->mask, 1, span->end);
+ span->writeAll = GL_TRUE;
+ }
/* Determine if we have mono-chromatic colors */
monoColor = (span->interpMask & SPAN_RGBA) &&
span->redStep == 0 && span->greenStep == 0 &&
span->blueStep == 0 && span->alphaStep == 0;
- /* Window clipping */
- if ((swrast->_RasterMask & WINCLIP_BIT) || primitive == GL_BITMAP) {
- if (clip_span(ctx, span) == GL_FALSE) {
- return;
- }
- }
-
- /* Scissor test */
- if (ctx->Scissor.Enabled) {
- if (!_mesa_scissor_span(ctx, span)) {
+ /* Clipping */
+ if ((swrast->_RasterMask & CLIP_BIT) || (primitive == GL_BITMAP)
+ || (primitive == GL_POINT)) {
+ if (!clip_span(ctx, span)) {
return;
}
}
@@ -802,11 +865,13 @@ _mesa_write_rgba_span( GLcontext *ctx, struct sw_span *span,
/* Fog */
/* XXX try to simplify the fog code! */
if (ctx->Fog.Enabled) {
- if ((span->arrayMask & SPAN_FOG) && !swrast->_PreferPixelFog)
+ if ((span->arrayMask & SPAN_FOG) && !swrast->_PreferPixelFog) {
_mesa_fog_rgba_pixels_with_array(ctx, span, span->fogArray,
span->color.rgba);
- else if ((span->interpMask & SPAN_FOG) && !swrast->_PreferPixelFog)
+ }
+ else if ((span->interpMask & SPAN_FOG) && !swrast->_PreferPixelFog) {
_mesa_fog_rgba_pixels(ctx, span, span->color.rgba);
+ }
else {
if ((span->interpMask & SPAN_Z) && (span->arrayMask & SPAN_Z) == 0)
interpolate_z(ctx, span);
@@ -826,51 +891,63 @@ _mesa_write_rgba_span( GLcontext *ctx, struct sw_span *span,
}
if (swrast->_RasterMask & MULTI_DRAW_BIT) {
- multi_write_rgba_span( ctx, span->end, span->x, span->y,
- (const GLchan (*)[4]) span->color.rgba,
- span->mask );
+ multi_write_rgba_span(ctx, span);
}
else {
/* normal: write to exactly one buffer */
+#if 1
if (ctx->Color.ColorLogicOpEnabled) {
- _mesa_logicop_rgba_span( ctx, span->end, span->x, span->y,
- span->color.rgba, span->mask );
+ _mesa_logicop_rgba_span(ctx, span, span->color.rgba);
monoColor = GL_FALSE;
}
else if (ctx->Color.BlendEnabled) {
- _mesa_blend_span( ctx, span->end, span->x, span->y,
- span->color.rgba, span->mask );
+ _mesa_blend_span(ctx, span, span->color.rgba);
monoColor = GL_FALSE;
}
-
+#endif
/* Color component masking */
if (colorMask != 0xffffffff) {
- _mesa_mask_rgba_span( ctx, span->end, span->x, span->y,
- span->color.rgba );
+ _mesa_mask_rgba_span(ctx, span, span->color.rgba);
monoColor = GL_FALSE;
}
/* write pixels */
- if (monoColor) {
- /* all pixels have same color */
- GLchan color[4];
- color[RCOMP] = FixedToChan(span->red);
- color[GCOMP] = FixedToChan(span->green);
- color[BCOMP] = FixedToChan(span->blue);
- color[ACOMP] = FixedToChan(span->alpha);
- (*swrast->Driver.WriteMonoRGBASpan)( ctx, span->end, span->x, span->y,
- color, span->mask);
+ if (span->arrayMask & SPAN_XY) {
+ /* array of pixel coords */
+ /* XXX test for mono color */
+ (*swrast->Driver.WriteRGBAPixels)(ctx, span->end, span->xArray,
+ span->yArray, (const GLchan (*)[4]) span->color.rgba, span->mask);
+ if (SWRAST_CONTEXT(ctx)->_RasterMask & ALPHABUF_BIT) {
+ _mesa_write_alpha_pixels(ctx, span->end,
+ span->xArray, span->yArray,
+ (const GLchan (*)[4]) span->color.rgba,
+ span->mask);
+ }
}
else {
- (*swrast->Driver.WriteRGBASpan)( ctx, span->end, span->x, span->y,
+ /* horizontal run of pixels */
+ if (monoColor) {
+ /* all pixels have same color */
+ GLchan color[4];
+ color[RCOMP] = FixedToChan(span->red);
+ color[GCOMP] = FixedToChan(span->green);
+ color[BCOMP] = FixedToChan(span->blue);
+ color[ACOMP] = FixedToChan(span->alpha);
+ (*swrast->Driver.WriteMonoRGBASpan)(ctx, span->end, span->x,
+ span->y, color, span->mask);
+ /* XXX software alpha buffer writes! */
+ }
+ else {
+ /* each pixel is a different color */
+ (*swrast->Driver.WriteRGBASpan)(ctx, span->end, span->x, span->y,
(const GLchan (*)[4]) span->color.rgba,
- span->writeAll ? ((const GLubyte *) NULL) : span->mask );
- }
-
- if (swrast->_RasterMask & ALPHABUF_BIT) {
- _mesa_write_alpha_span( ctx, span->end, span->x, span->y,
+ span->writeAll ? ((const GLubyte *) NULL) : span->mask);
+ if (swrast->_RasterMask & ALPHABUF_BIT) {
+ _mesa_write_alpha_span(ctx, span->end, span->x, span->y,
(const GLchan (*)[4]) span->color.rgba,
- span->writeAll ? ((const GLubyte *) NULL) : span->mask );
+ span->writeAll ? ((const GLubyte *) NULL) : span->mask);
+ }
+ }
}
}
@@ -918,6 +995,7 @@ _mesa_write_texture_span( GLcontext *ctx, struct sw_span *span,
SWcontext *swrast = SWRAST_CONTEXT(ctx);
const GLuint origArrayMask = span->arrayMask;
+ ASSERT(span->end <= MAX_WIDTH);
ASSERT((span->interpMask & span->arrayMask) == 0);
ASSERT(ctx->Texture._ReallyEnabled);
@@ -925,26 +1003,26 @@ _mesa_write_texture_span( GLcontext *ctx, struct sw_span *span,
printf("%s() interp 0x%x array 0x%x\n", __FUNCTION__, span->interpMask, span->arrayMask);
*/
- MEMSET(span->mask, 1, span->end);
- span->writeAll = GL_TRUE;
-
- /* clip against window bounds */
- if ((swrast->_RasterMask & WINCLIP_BIT) || primitive==GL_BITMAP) {
- if (clip_span(ctx,span) == GL_FALSE) {
- return;
- }
+ if (span->arrayMask & SPAN_MASK) {
+ /* mask was initialized by caller, probably glBitmap */
+ span->writeAll = GL_FALSE;
+ }
+ else {
+ MEMSET(span->mask, 1, span->end);
+ span->writeAll = GL_TRUE;
}
- /* Scissor test */
- if (ctx->Scissor.Enabled) {
- if (_mesa_scissor_span( ctx, span ) == GL_FALSE) {
- return;
+ /* Clipping */
+ if ((swrast->_RasterMask & CLIP_BIT) || (primitive == GL_BITMAP)
+ || (primitive == GL_POINT)) {
+ if (!clip_span(ctx, span)) {
+ return;
}
}
/* Polygon Stippling */
- if (ctx->Polygon.StippleFlag && primitive==GL_POLYGON) {
- stipple_polygon_span( ctx, span);
+ if (ctx->Polygon.StippleFlag && primitive == GL_POLYGON) {
+ stipple_polygon_span(ctx, span);
}
/* Need texture coordinates now */
@@ -1052,33 +1130,43 @@ _mesa_write_texture_span( GLcontext *ctx, struct sw_span *span,
}
if (swrast->_RasterMask & MULTI_DRAW_BIT) {
- multi_write_rgba_span( ctx, span->end, span->x, span->y,
- (const GLchan (*)[4]) span->color.rgba,
- span->mask );
+ multi_write_rgba_span(ctx, span);
}
else {
/* normal: write to exactly one buffer */
if (ctx->Color.ColorLogicOpEnabled) {
- _mesa_logicop_rgba_span( ctx, span->end, span->x, span->y,
- span->color.rgba, span->mask );
+ _mesa_logicop_rgba_span(ctx, span, span->color.rgba);
}
else if (ctx->Color.BlendEnabled) {
- _mesa_blend_span( ctx, span->end, span->x, span->y,
- span->color.rgba, span->mask);
+ _mesa_blend_span(ctx, span, span->color.rgba);
}
if (colorMask != 0xffffffff) {
- _mesa_mask_rgba_span( ctx, span->end, span->x, span->y,
- span->color.rgba );
+ _mesa_mask_rgba_span(ctx, span, span->color.rgba);
}
- (*swrast->Driver.WriteRGBASpan)( ctx, span->end, span->x, span->y,
+
+ if (span->arrayMask & SPAN_XY) {
+ /* array of pixel coords */
+ (*swrast->Driver.WriteRGBAPixels)(ctx, span->end, span->xArray,
+ span->yArray, (const GLchan (*)[4]) span->color.rgba, span->mask);
+ if (SWRAST_CONTEXT(ctx)->_RasterMask & ALPHABUF_BIT) {
+ _mesa_write_alpha_pixels(ctx, span->end,
+ span->xArray, span->yArray,
+ (const GLchan (*)[4]) span->color.rgba,
+ span->mask);
+ }
+ }
+ else {
+ /* horizontal run of pixels */
+ (*swrast->Driver.WriteRGBASpan)(ctx, span->end, span->x, span->y,
(const GLchan (*)[4]) span->color.rgba,
- span->writeAll ? NULL : span->mask );
- if (swrast->_RasterMask & ALPHABUF_BIT) {
- _mesa_write_alpha_span( ctx, span->end, span->x, span->y,
- (const GLchan (*)[4]) span->color.rgba,
- span->writeAll ? NULL : span->mask );
+ span->writeAll ? NULL : span->mask);
+ if (swrast->_RasterMask & ALPHABUF_BIT) {
+ _mesa_write_alpha_span(ctx, span->end, span->x, span->y,
+ (const GLchan (*)[4]) span->color.rgba,
+ span->writeAll ? NULL : span->mask);
+ }
}
}
@@ -1133,7 +1221,7 @@ _mesa_read_rgba_span( GLcontext *ctx, GLframebuffer *buffer,
(*swrast->Driver.ReadRGBASpan)( ctx, length, x + skip, y, rgba + skip );
if (buffer->UseSoftwareAlphaBuffers) {
- _mesa_read_alpha_span( ctx, length, x + skip, y, rgba + skip );
+ _mesa_read_alpha_span(ctx, length, x + skip, y, rgba + skip);
}
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 22:51:05 +0000