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-rw-r--r--src/mesa/state_tracker/st_atom_blend.c107
-rw-r--r--src/mesa/state_tracker/st_cb_clear.c16
-rw-r--r--src/mesa/state_tracker/st_extensions.c10
3 files changed, 94 insertions, 39 deletions
diff --git a/src/mesa/state_tracker/st_atom_blend.c b/src/mesa/state_tracker/st_atom_blend.c
index 43e62c29f3..1511b88dd1 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -152,14 +152,54 @@ translate_logicop(GLenum logicop)
}
}
+/**
+ * Figure out if colormasks are different per rt.
+ */
+static GLboolean
+colormask_per_rt(GLcontext *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 are different per rt.
+ */
+static GLboolean
+blend_per_rt(GLcontext *ctx)
+{
+ if (ctx->Color.BlendEnabled &&
+ (ctx->Color.BlendEnabled != ((1 << ctx->Const.MaxDrawBuffers) - 1))) {
+ return GL_TRUE;
+ }
+ return GL_FALSE;
+}
static void
update_blend( struct st_context *st )
{
struct pipe_blend_state *blend = &st->state.blend;
+ unsigned num_state = 1;
+ unsigned i;
memset(blend, 0, sizeof(*blend));
+ if (blend_per_rt(st->ctx) || colormask_per_rt(st->ctx)) {
+ num_state = st->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 (st->ctx->Color.ColorLogicOpEnabled ||
(st->ctx->Color.BlendEnabled &&
st->ctx->Color.BlendEquationRGB == GL_LOGIC_OP)) {
@@ -169,30 +209,33 @@ update_blend( struct st_context *st )
}
else if (st->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; 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 = (st->ctx->Color.BlendEnabled >> i) & 0x1;
+
+ blend->rt[i].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->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(st->ctx->Color.BlendSrcRGB);
+ blend->rt[i].rgb_dst_factor = translate_blend(st->ctx->Color.BlendDstRGB);
+ }
+
+ blend->rt[i].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->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(st->ctx->Color.BlendSrcA);
+ blend->rt[i].alpha_dst_factor = translate_blend(st->ctx->Color.BlendDstA);
+ }
}
}
else {
@@ -200,14 +243,16 @@ update_blend( struct st_context *st )
}
/* 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;
+ for (i = 0; i < num_state; i++) {
+ if (st->ctx->Color.ColorMask[i][0])
+ blend->rt[i].colormask |= PIPE_MASK_R;
+ if (st->ctx->Color.ColorMask[i][1])
+ blend->rt[i].colormask |= PIPE_MASK_G;
+ if (st->ctx->Color.ColorMask[i][2])
+ blend->rt[i].colormask |= PIPE_MASK_B;
+ if (st->ctx->Color.ColorMask[i][3])
+ blend->rt[i].colormask |= PIPE_MASK_A;
+ }
if (st->ctx->Color.DitherFlag)
blend->dither = 1;
diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
index 398587ac4b..94693d91f3 100644
--- a/src/mesa/state_tracker/st_cb_clear.c
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -224,19 +224,19 @@ clear_with_quad(GLcontext *ctx,
{
struct pipe_blend_state blend;
memset(&blend, 0, sizeof(blend));
- blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
- blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
- blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
- blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
+ blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+ blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+ blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
+ blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
if (color) {
if (ctx->Color.ColorMask[0][0])
- blend.colormask |= PIPE_MASK_R;
+ blend.rt[0].colormask |= PIPE_MASK_R;
if (ctx->Color.ColorMask[0][1])
- blend.colormask |= PIPE_MASK_G;
+ blend.rt[0].colormask |= PIPE_MASK_G;
if (ctx->Color.ColorMask[0][2])
- blend.colormask |= PIPE_MASK_B;
+ blend.rt[0].colormask |= PIPE_MASK_B;
if (ctx->Color.ColorMask[0][3])
- blend.colormask |= PIPE_MASK_A;
+ blend.rt[0].colormask |= PIPE_MASK_A;
if (st->ctx->Color.DitherFlag)
blend.dither = 1;
}
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 89a16c1cbc..31c03c0783 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -314,4 +314,14 @@ void st_init_extensions(struct st_context *st)
if (st->pipe->render_condition) {
ctx->Extensions.NV_conditional_render = GL_TRUE;
}
+
+ if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_ENABLE)) {
+ ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
+ }
+
+#if 0 /* not yet */
+ if (screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC)) {
+ ctx->Extensions.ARB_draw_buffers_blend = GL_TRUE;
+ }
+#endif
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 20:52:11 +0000