diff options
| -rw-r--r-- | src/mesa/main/attrib.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c index 886939f0ee..f5b77e82a9 100644 --- a/src/mesa/main/attrib.c +++ b/src/mesa/main/attrib.c @@ -500,9 +500,14 @@ pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable) TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST); if (ctx->Color.BlendEnabled != enable->Blend) { - GLuint i; - for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { - _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1); + if (ctx->Extensions.EXT_draw_buffers2) { + GLuint i; + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1); + } + } + else { + _mesa_set_enable(ctx, GL_BLEND, (enable->Blend & 1)); } } @@ -967,10 +972,15 @@ _mesa_PopAttrib(void) _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled); _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef); if (ctx->Color.BlendEnabled != color->BlendEnabled) { - GLuint i; - for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { - _mesa_set_enablei(ctx, GL_BLEND, i, - (color->BlendEnabled >> i) & 1); + if (ctx->Extensions.EXT_draw_buffers2) { + GLuint i; + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + _mesa_set_enablei(ctx, GL_BLEND, i, + (color->BlendEnabled >> i) & 1); + } + } + else { + _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1)); } } _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB, |