}
}
+/**
+ * Figure out if colormasks are different per rt.
+ */
+static GLboolean
+colormask_per_rt(const struct gl_context *ctx)
+{
+ /* a bit suboptimal have to compare lots of values */
+ unsigned i;
+ for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
+ if (memcmp(ctx->Color.ColorMask[0], ctx->Color.ColorMask[i], 4)) {
+ return GL_TRUE;
+ }
+ }
+ return GL_FALSE;
+}
+
+/**
+ * Figure out if blend enables/state are different per rt.
+ */
+static GLboolean
+blend_per_rt(const struct gl_context *ctx)
+{
+ if (ctx->Color.BlendEnabled &&
+ (ctx->Color.BlendEnabled != ((1 << ctx->Const.MaxDrawBuffers) - 1))) {
+ /* This can only happen if GL_EXT_draw_buffers2 is enabled */
+ return GL_TRUE;
+ }
+ if (ctx->Color._BlendFuncPerBuffer || ctx->Color._BlendEquationPerBuffer) {
+ /* this can only happen if GL_ARB_draw_buffers_blend is enabled */
+ return GL_TRUE;
+ }
+ return GL_FALSE;
+}
static void
update_blend( struct st_context *st )
{
struct pipe_blend_state *blend = &st->state.blend;
+ const struct gl_context *ctx = st->ctx;
+ unsigned num_state = 1;
+ unsigned i, j;
memset(blend, 0, sizeof(*blend));
- if (st->ctx->Color.ColorLogicOpEnabled ||
- (st->ctx->Color.BlendEnabled &&
- st->ctx->Color.BlendEquationRGB == GL_LOGIC_OP)) {
+ if (blend_per_rt(ctx) || colormask_per_rt(ctx)) {
+ num_state = ctx->Const.MaxDrawBuffers;
+ blend->independent_blend_enable = 1;
+ }
+ /* Note it is impossible to correctly deal with EXT_blend_logic_op and
+ EXT_draw_buffers2/EXT_blend_equation_separate at the same time.
+ These combinations would require support for per-rt logicop enables
+ and separate alpha/rgb logicop/blend support respectively. Neither
+ possible in gallium nor most hardware. Assume these combinations
+ don't happen. */
+ if (ctx->Color.ColorLogicOpEnabled ||
+ (ctx->Color.BlendEnabled &&
+ ctx->Color.Blend[0].EquationRGB == GL_LOGIC_OP)) {
/* logicop enabled */
blend->logicop_enable = 1;
- blend->logicop_func = translate_logicop(st->ctx->Color.LogicOp);
+ blend->logicop_func = translate_logicop(ctx->Color.LogicOp);
}
- else if (st->ctx->Color.BlendEnabled) {
+ else if (ctx->Color.BlendEnabled) {
/* blending enabled */
- blend->blend_enable = 1;
-
- blend->rgb_func = translate_blend(st->ctx->Color.BlendEquationRGB);
- if (st->ctx->Color.BlendEquationRGB == GL_MIN ||
- st->ctx->Color.BlendEquationRGB == GL_MAX) {
- /* Min/max are special */
- blend->rgb_src_factor = PIPE_BLENDFACTOR_ONE;
- blend->rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
- }
- else {
- blend->rgb_src_factor = translate_blend(st->ctx->Color.BlendSrcRGB);
- blend->rgb_dst_factor = translate_blend(st->ctx->Color.BlendDstRGB);
- }
+ for (i = 0, j = 0; i < num_state; i++) {
- blend->alpha_func = translate_blend(st->ctx->Color.BlendEquationA);
- if (st->ctx->Color.BlendEquationA == GL_MIN ||
- st->ctx->Color.BlendEquationA == GL_MAX) {
- /* Min/max are special */
- blend->alpha_src_factor = PIPE_BLENDFACTOR_ONE;
- blend->alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
- }
- else {
- blend->alpha_src_factor = translate_blend(st->ctx->Color.BlendSrcA);
- blend->alpha_dst_factor = translate_blend(st->ctx->Color.BlendDstA);
+ blend->rt[i].blend_enable = (ctx->Color.BlendEnabled >> i) & 0x1;
+
+ if (ctx->Extensions.ARB_draw_buffers_blend)
+ j = i;
+
+ blend->rt[i].rgb_func =
+ translate_blend(ctx->Color.Blend[j].EquationRGB);
+
+ if (ctx->Color.Blend[i].EquationRGB == GL_MIN ||
+ ctx->Color.Blend[i].EquationRGB == GL_MAX) {
+ /* Min/max are special */
+ blend->rt[i].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+ blend->rt[i].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
+ }
+ else {
+ blend->rt[i].rgb_src_factor =
+ translate_blend(ctx->Color.Blend[j].SrcRGB);
+ blend->rt[i].rgb_dst_factor =
+ translate_blend(ctx->Color.Blend[j].DstRGB);
+ }
+
+ blend->rt[i].alpha_func =
+ translate_blend(ctx->Color.Blend[j].EquationA);
+
+ if (ctx->Color.Blend[i].EquationA == GL_MIN ||
+ ctx->Color.Blend[i].EquationA == GL_MAX) {
+ /* Min/max are special */
+ blend->rt[i].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+ blend->rt[i].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
+ }
+ else {
+ blend->rt[i].alpha_src_factor =
+ translate_blend(ctx->Color.Blend[j].SrcA);
+ blend->rt[i].alpha_dst_factor =
+ translate_blend(ctx->Color.Blend[j].DstA);
+ }
}
}
else {
}
/* Colormask - maybe reverse these bits? */
- if (st->ctx->Color.ColorMask[0][0])
- blend->colormask |= PIPE_MASK_R;
- if (st->ctx->Color.ColorMask[0][1])
- blend->colormask |= PIPE_MASK_G;
- if (st->ctx->Color.ColorMask[0][2])
- blend->colormask |= PIPE_MASK_B;
- if (st->ctx->Color.ColorMask[0][3])
- blend->colormask |= PIPE_MASK_A;
-
- if (st->ctx->Color.DitherFlag)
+ for (i = 0; i < num_state; i++) {
+ if (ctx->Color.ColorMask[i][0])
+ blend->rt[i].colormask |= PIPE_MASK_R;
+ if (ctx->Color.ColorMask[i][1])
+ blend->rt[i].colormask |= PIPE_MASK_G;
+ if (ctx->Color.ColorMask[i][2])
+ blend->rt[i].colormask |= PIPE_MASK_B;
+ if (ctx->Color.ColorMask[i][3])
+ blend->rt[i].colormask |= PIPE_MASK_A;
+ }
+
+ if (ctx->Color.DitherFlag)
blend->dither = 1;
+ if (ctx->Multisample.Enabled) {
+ /* unlike in gallium/d3d10 these operations are only performed
+ if msaa is enabled */
+ if (ctx->Multisample.SampleAlphaToCoverage)
+ blend->alpha_to_coverage = 1;
+ if (ctx->Multisample.SampleAlphaToOne)
+ blend->alpha_to_one = 1;
+ }
+
cso_set_blend(st->cso_context, blend);
{
struct pipe_blend_color bc;
- COPY_4FV(bc.color, st->ctx->Color.BlendColor);
+ COPY_4FV(bc.color, ctx->Color.BlendColorUnclamped);
cso_set_blend_color(st->cso_context, &bc);
}
}
const struct st_tracked_state st_update_blend = {
"st_update_blend", /* name */
{ /* dirty */
- (_NEW_COLOR), /* XXX _NEW_BLEND someday? */ /* mesa */
+ (_NEW_COLOR | _NEW_MULTISAMPLE), /* XXX _NEW_BLEND someday? */ /* mesa */
0, /* st */
},
update_blend, /* update */
projects / mesa.git / blobdiff