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-rw-r--r--src/mesa/swrast/s_span.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index caea673f2f0..321959df933 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -933,19 +933,19 @@ clamp_colors(SWspan *span)
* \param output which fragment program color output is being processed
*/
static inline void
-convert_color_type(SWspan *span, GLenum newType, GLuint output)
+convert_color_type(SWspan *span, GLenum srcType, GLenum newType, GLuint output)
{
GLvoid *src, *dst;
- if (output > 0 || span->array->ChanType == GL_FLOAT) {
+ if (output > 0 || srcType == GL_FLOAT) {
src = span->array->attribs[VARYING_SLOT_COL0 + output];
span->array->ChanType = GL_FLOAT;
}
- else if (span->array->ChanType == GL_UNSIGNED_BYTE) {
+ else if (srcType == GL_UNSIGNED_BYTE) {
src = span->array->rgba8;
}
else {
- ASSERT(span->array->ChanType == GL_UNSIGNED_SHORT);
+ ASSERT(srcType == GL_UNSIGNED_SHORT);
src = span->array->rgba16;
}
@@ -979,7 +979,7 @@ shade_texture_span(struct gl_context *ctx, SWspan *span)
ctx->ATIFragmentShader._Enabled) {
/* programmable shading */
if (span->primitive == GL_BITMAP && span->array->ChanType != GL_FLOAT) {
- convert_color_type(span, GL_FLOAT, 0);
+ convert_color_type(span, span->array->ChanType, GL_FLOAT, 0);
}
else {
span->array->rgba = (void *) span->array->attribs[VARYING_SLOT_COL0];
@@ -1314,6 +1314,8 @@ _swrast_write_rgba_span( struct gl_context *ctx, SWspan *span)
const GLboolean multiFragOutputs =
_swrast_use_fragment_program(ctx)
&& fp->Base.OutputsWritten >= (1 << FRAG_RESULT_DATA0);
+ /* Save srcColorType because convert_color_type() can change it */
+ const GLenum srcColorType = span->array->ChanType;
GLuint buf;
for (buf = 0; buf < numBuffers; buf++) {
@@ -1325,17 +1327,18 @@ _swrast_write_rgba_span( struct gl_context *ctx, SWspan *span)
/* re-use one of the attribute array buffers for rgbaSave */
GLchan (*rgbaSave)[4] = (GLchan (*)[4]) span->array->attribs[0];
struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
- GLenum colorType = srb->ColorType;
+ const GLenum dstColorType = srb->ColorType;
- assert(colorType == GL_UNSIGNED_BYTE ||
- colorType == GL_FLOAT);
+ assert(dstColorType == GL_UNSIGNED_BYTE ||
+ dstColorType == GL_FLOAT);
/* set span->array->rgba to colors for renderbuffer's datatype */
- if (span->array->ChanType != colorType) {
- convert_color_type(span, colorType, 0);
+ if (srcColorType != dstColorType) {
+ convert_color_type(span, srcColorType, dstColorType,
+ multiFragOutputs ? buf : 0);
}
else {
- if (span->array->ChanType == GL_UNSIGNED_BYTE) {
+ if (srcColorType == GL_UNSIGNED_BYTE) {
span->array->rgba = span->array->rgba8;
}
else {