#include "st_context.h"
#include "st_atom.h"
+
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
+#include "cso_cache/cso_context.h"
+#include "main/macros.h"
/**
* Convert GLenum blend tokens to pipe tokens.
* Both blend factors and blend funcs are accepted.
*/
static GLuint
-gl_blend_to_sp(GLenum blend)
+translate_blend(GLenum blend)
{
switch (blend) {
/* blend functions */
case GL_ONE_MINUS_SRC_ALPHA:
return PIPE_BLENDFACTOR_INV_SRC_ALPHA;
case GL_ONE_MINUS_DST_COLOR:
- return PIPE_BLENDFACTOR_INV_DST_ALPHA;
- case GL_ONE_MINUS_DST_ALPHA:
return PIPE_BLENDFACTOR_INV_DST_COLOR;
+ case GL_ONE_MINUS_DST_ALPHA:
+ return PIPE_BLENDFACTOR_INV_DST_ALPHA;
case GL_ONE_MINUS_CONSTANT_COLOR:
return PIPE_BLENDFACTOR_INV_CONST_COLOR;
case GL_ONE_MINUS_CONSTANT_ALPHA:
return PIPE_BLENDFACTOR_INV_SRC1_ALPHA;
*/
default:
- assert("invalid GL token in gl_blend_to_sp()" == NULL);
+ assert("invalid GL token in translate_blend()" == NULL);
return 0;
}
}
* Convert GLenum logicop tokens to pipe tokens.
*/
static GLuint
-gl_logicop_to_sp(GLenum logicop)
+translate_logicop(GLenum logicop)
{
switch (logicop) {
case GL_CLEAR:
case GL_SET:
return PIPE_LOGICOP_SET;
default:
- assert("invalid GL token in gl_logicop_to_sp()" == NULL);
+ assert("invalid GL token in translate_logicop()" == NULL);
return 0;
}
}
+/**
+ * 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;
+ 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));
+ 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 = gl_logicop_to_sp(st->ctx->Color.LogicOp);
+ blend->logicop_enable = 1;
+ 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 = gl_blend_to_sp(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 = gl_blend_to_sp(st->ctx->Color.BlendSrcRGB);
- blend.rgb_dst_factor = gl_blend_to_sp(st->ctx->Color.BlendDstRGB);
- }
+ for (i = 0, j = 0; i < num_state; i++) {
- blend.alpha_func = gl_blend_to_sp(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 = gl_blend_to_sp(st->ctx->Color.BlendSrcA);
- blend.alpha_dst_factor = gl_blend_to_sp(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 {
/* no blending / logicop */
}
- if (memcmp(&blend, &st->state.blend, sizeof(blend)) != 0) {
- /* state has changed */
- st->state.blend = blend; /* struct copy */
- st->pipe->set_blend_state(st->pipe, &blend); /* set new state */
+ /* Colormask - maybe reverse these bits? */
+ 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 (memcmp(st->ctx->Color.BlendColor, &st->state.blend_color, 4 * sizeof(GLfloat)) != 0) {
- /* state has changed */
- st->state.blend_color.color[0] = st->ctx->Color.BlendColor[0];
- st->state.blend_color.color[1] = st->ctx->Color.BlendColor[1];
- st->state.blend_color.color[2] = st->ctx->Color.BlendColor[2];
- st->state.blend_color.color[3] = st->ctx->Color.BlendColor[3];
- st->pipe->set_blend_color(st->pipe, (struct pipe_blend_color *) st->ctx->Color.BlendColor);
+ 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, ctx->Color.BlendColorUnclamped);
+ cso_set_blend_color(st->cso_context, &bc);
}
}
const struct st_tracked_state st_update_blend = {
- .dirty = {
- .mesa = (_NEW_COLOR), /* XXX _NEW_BLEND someday? */
- .st = 0,
+ "st_update_blend", /* name */
+ { /* dirty */
+ (_NEW_COLOR | _NEW_MULTISAMPLE), /* XXX _NEW_BLEND someday? */ /* mesa */
+ 0, /* st */
},
- .update = update_blend
+ update_blend, /* update */
};
-
-
-
-
-
projects / mesa.git / blobdiff