Mesa (master): r600: add blending support
Alex Deucher
agd5f at kemper.freedesktop.org
Mon Jul 20 23:01:17 UTC 2009
Module: Mesa
Branch: master
Commit: 265d5eba658f38f5a9d12d57b701e4ffe49100eb
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=265d5eba658f38f5a9d12d57b701e4ffe49100eb
Author: Alex Deucher <alexdeucher at gmail.com>
Date: Mon Jul 20 18:50:59 2009 -0400
r600: add blending support
---
src/mesa/drivers/dri/r600/r700_state.c | 210 ++++++++++++++++++++++++++++++--
1 files changed, 197 insertions(+), 13 deletions(-)
diff --git a/src/mesa/drivers/dri/r600/r700_state.c b/src/mesa/drivers/dri/r600/r700_state.c
index 1d6d398..070cea5 100644
--- a/src/mesa/drivers/dri/r600/r700_state.c
+++ b/src/mesa/drivers/dri/r600/r700_state.c
@@ -312,17 +312,211 @@ static void r700AlphaFunc(GLcontext * ctx, GLenum func, GLfloat ref) //---------
static void r700BlendColor(GLcontext * ctx, const GLfloat cf[4]) //----------------
{
+ context_t *context = R700_CONTEXT(ctx);
+ R700_CHIP_CONTEXT *r700 = (R700_CHIP_CONTEXT*)(&context->hw);
+
+ r700->CB_BLEND_RED.f32All = cf[0];
+ r700->CB_BLEND_GREEN.f32All = cf[1];
+ r700->CB_BLEND_BLUE.f32All = cf[2];
+ r700->CB_BLEND_ALPHA.f32All = cf[3];
+}
+
+static int blend_factor(GLenum factor, GLboolean is_src)
+{
+ switch (factor) {
+ case GL_ZERO:
+ return BLEND_ZERO;
+ break;
+ case GL_ONE:
+ return BLEND_ONE;
+ break;
+ case GL_DST_COLOR:
+ return BLEND_DST_COLOR;
+ break;
+ case GL_ONE_MINUS_DST_COLOR:
+ return BLEND_ONE_MINUS_DST_COLOR;
+ break;
+ case GL_SRC_COLOR:
+ return BLEND_SRC_COLOR;
+ break;
+ case GL_ONE_MINUS_SRC_COLOR:
+ return BLEND_ONE_MINUS_SRC_COLOR;
+ break;
+ case GL_SRC_ALPHA:
+ return BLEND_SRC_ALPHA;
+ break;
+ case GL_ONE_MINUS_SRC_ALPHA:
+ return BLEND_ONE_MINUS_SRC_ALPHA;
+ break;
+ case GL_DST_ALPHA:
+ return BLEND_DST_ALPHA;
+ break;
+ case GL_ONE_MINUS_DST_ALPHA:
+ return BLEND_ONE_MINUS_DST_ALPHA;
+ break;
+ case GL_SRC_ALPHA_SATURATE:
+ return (is_src) ? BLEND_SRC_ALPHA_SATURATE : BLEND_ZERO;
+ break;
+ case GL_CONSTANT_COLOR:
+ return BLEND_CONSTANT_COLOR;
+ break;
+ case GL_ONE_MINUS_CONSTANT_COLOR:
+ return BLEND_ONE_MINUS_CONSTANT_COLOR;
+ break;
+ case GL_CONSTANT_ALPHA:
+ return BLEND_CONSTANT_ALPHA;
+ break;
+ case GL_ONE_MINUS_CONSTANT_ALPHA:
+ return BLEND_ONE_MINUS_CONSTANT_ALPHA;
+ break;
+ default:
+ fprintf(stderr, "unknown blend factor %x\n", factor);
+ return (is_src) ? BLEND_ONE : BLEND_ZERO;
+ break;
+ }
+}
+
+static void r700SetBlendState(GLcontext * ctx)
+{
+ context_t *context = R700_CONTEXT(ctx);
+ R700_CHIP_CONTEXT *r700 = (R700_CHIP_CONTEXT*)(&context->hw);
+ int id = 0;
+ uint32_t blend_reg = 0, eqn, eqnA;
+
+ if (RGBA_LOGICOP_ENABLED(ctx) || !ctx->Color.BlendEnabled) {
+ SETfield(blend_reg,
+ BLEND_ONE, COLOR_SRCBLEND_shift, COLOR_SRCBLEND_mask);
+ SETfield(blend_reg,
+ BLEND_ZERO, COLOR_DESTBLEND_shift, COLOR_DESTBLEND_mask);
+ SETfield(blend_reg,
+ COMB_DST_PLUS_SRC, COLOR_COMB_FCN_shift, COLOR_COMB_FCN_mask);
+ SETfield(blend_reg,
+ BLEND_ONE, ALPHA_SRCBLEND_shift, ALPHA_SRCBLEND_mask);
+ SETfield(blend_reg,
+ BLEND_ZERO, ALPHA_DESTBLEND_shift, ALPHA_DESTBLEND_mask);
+ SETfield(blend_reg,
+ COMB_DST_PLUS_SRC, ALPHA_COMB_FCN_shift, ALPHA_COMB_FCN_mask);
+ if (context->radeon.radeonScreen->chip_family == CHIP_FAMILY_R600)
+ r700->CB_BLEND_CONTROL.u32All = blend_reg;
+ else
+ r700->render_target[id].CB_BLEND0_CONTROL.u32All = blend_reg;
+ return;
+ }
+
+ SETfield(blend_reg,
+ blend_factor(ctx->Color.BlendSrcRGB, GL_TRUE),
+ COLOR_SRCBLEND_shift, COLOR_SRCBLEND_mask);
+ SETfield(blend_reg,
+ blend_factor(ctx->Color.BlendDstRGB, GL_FALSE),
+ COLOR_DESTBLEND_shift, COLOR_DESTBLEND_mask);
+
+ switch (ctx->Color.BlendEquationRGB) {
+ case GL_FUNC_ADD:
+ eqn = COMB_DST_PLUS_SRC;
+ break;
+ case GL_FUNC_SUBTRACT:
+ eqn = COMB_SRC_MINUS_DST;
+ break;
+ case GL_FUNC_REVERSE_SUBTRACT:
+ eqn = COMB_DST_MINUS_SRC;
+ break;
+ case GL_MIN:
+ eqn = COMB_MIN_DST_SRC;
+ SETfield(blend_reg,
+ BLEND_ONE,
+ COLOR_SRCBLEND_shift, COLOR_SRCBLEND_mask);
+ SETfield(blend_reg,
+ BLEND_ONE,
+ COLOR_DESTBLEND_shift, COLOR_DESTBLEND_mask);
+ break;
+ case GL_MAX:
+ eqn = COMB_MAX_DST_SRC;
+ SETfield(blend_reg,
+ BLEND_ONE,
+ COLOR_SRCBLEND_shift, COLOR_SRCBLEND_mask);
+ SETfield(blend_reg,
+ BLEND_ONE,
+ COLOR_DESTBLEND_shift, COLOR_DESTBLEND_mask);
+ break;
+
+ default:
+ fprintf(stderr,
+ "[%s:%u] Invalid RGB blend equation (0x%04x).\n",
+ __FUNCTION__, __LINE__, ctx->Color.BlendEquationRGB);
+ return;
+ }
+ SETfield(blend_reg,
+ eqn, COLOR_COMB_FCN_shift, COLOR_COMB_FCN_mask);
+
+ SETfield(blend_reg,
+ blend_factor(ctx->Color.BlendSrcRGB, GL_TRUE),
+ ALPHA_SRCBLEND_shift, ALPHA_SRCBLEND_mask);
+ SETfield(blend_reg,
+ blend_factor(ctx->Color.BlendDstRGB, GL_FALSE),
+ ALPHA_DESTBLEND_shift, ALPHA_DESTBLEND_mask);
+
+ switch (ctx->Color.BlendEquationA) {
+ case GL_FUNC_ADD:
+ eqnA = COMB_DST_PLUS_SRC;
+ break;
+ case GL_FUNC_SUBTRACT:
+ eqnA = COMB_SRC_MINUS_DST;
+ break;
+ case GL_FUNC_REVERSE_SUBTRACT:
+ eqnA = COMB_DST_MINUS_SRC;
+ break;
+ case GL_MIN:
+ eqnA = COMB_MIN_DST_SRC;
+ SETfield(blend_reg,
+ BLEND_ONE,
+ ALPHA_SRCBLEND_shift, ALPHA_SRCBLEND_mask);
+ SETfield(blend_reg,
+ BLEND_ONE,
+ ALPHA_DESTBLEND_shift, ALPHA_DESTBLEND_mask);
+ break;
+ case GL_MAX:
+ eqnA = COMB_MAX_DST_SRC;
+ SETfield(blend_reg,
+ BLEND_ONE,
+ ALPHA_SRCBLEND_shift, ALPHA_SRCBLEND_mask);
+ SETfield(blend_reg,
+ BLEND_ONE,
+ ALPHA_DESTBLEND_shift, ALPHA_DESTBLEND_mask);
+ break;
+ default:
+ fprintf(stderr,
+ "[%s:%u] Invalid A blend equation (0x%04x).\n",
+ __FUNCTION__, __LINE__, ctx->Color.BlendEquationA);
+ return;
+ }
+
+ SETfield(blend_reg,
+ eqnA, ALPHA_COMB_FCN_shift, ALPHA_COMB_FCN_mask);
+
+ SETbit(r700->render_target[id].CB_BLEND0_CONTROL.u32All, SEPARATE_ALPHA_BLEND_bit);
+
+ if (context->radeon.radeonScreen->chip_family == CHIP_FAMILY_R600)
+ r700->CB_BLEND_CONTROL.u32All = blend_reg;
+ else {
+ r700->render_target[id].CB_BLEND0_CONTROL.u32All = blend_reg;
+ SETbit(r700->CB_COLOR_CONTROL.u32All, PER_MRT_BLEND_bit);
+ }
+ SETfield(r700->CB_COLOR_CONTROL.u32All, (1 << id),
+ TARGET_BLEND_ENABLE_shift, TARGET_BLEND_ENABLE_mask);
+
}
static void r700BlendEquationSeparate(GLcontext * ctx,
GLenum modeRGB, GLenum modeA) //-----------------
{
+ r700SetBlendState(ctx);
}
static void r700BlendFuncSeparate(GLcontext * ctx,
GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA) //------------------------
{
+ r700SetBlendState(ctx);
}
/**
@@ -440,7 +634,7 @@ static void r700Enable(GLcontext * ctx, GLenum cap, GLboolean state) //---------
r700SetLogicOpState(ctx);
/* fall-through, because logic op overrides blending */
case GL_BLEND:
- //r700SetBlendState(ctx);
+ r700SetBlendState(ctx);
break;
case GL_CLIP_PLANE0:
case GL_CLIP_PLANE1:
@@ -471,7 +665,7 @@ static void r700Enable(GLcontext * ctx, GLenum cap, GLboolean state) //---------
break;
case GL_LINE_STIPPLE:
r700UpdateLineStipple(ctx);
- break;
+ break;
default:
break;
}
@@ -833,9 +1027,6 @@ void r700SetRenderTarget(context_t *context, int id)
SETbit(r700->render_target[id].CB_COLOR0_INFO.u32All, BLEND_CLAMP_bit);
SETfield(r700->render_target[id].CB_COLOR0_INFO.u32All, NUMBER_UNORM, NUMBER_TYPE_shift, NUMBER_TYPE_mask);
- CLEARfield(r700->render_target[id].CB_BLEND0_CONTROL.u32All, COLOR_SRCBLEND_mask); /* no dst blend */
- CLEARfield(r700->render_target[id].CB_BLEND0_CONTROL.u32All, ALPHA_SRCBLEND_mask); /* no dst blend */
-
r700->render_target[id].enabled = GL_TRUE;
}
@@ -1152,8 +1343,8 @@ void r700InitState(GLcontext * ctx) //-------------------
if (context->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV770)
SETfield(r700->SPI_THREAD_GROUPING.u32All, 1, PS_GROUPING_shift, PS_GROUPING_mask);
+ r700SetBlendState(ctx);
r700SetLogicOpState(ctx);
- CLEARbit(r700->CB_COLOR_CONTROL.u32All, PER_MRT_BLEND_bit);
r700->DB_SHADER_CONTROL.u32All = 0;
SETbit(r700->DB_SHADER_CONTROL.u32All, DUAL_EXPORT_ENABLE_bit);
@@ -1245,13 +1436,6 @@ void r700InitState(GLcontext * ctx) //-------------------
r700->CB_FOG_GREEN_R6XX.u32All = 0; //r6xx only
r700->CB_FOG_BLUE_R6XX.u32All = 0; //r6xx only
- r700->CB_BLEND_RED.u32All = 0;
- r700->CB_BLEND_GREEN.u32All = 0;
- r700->CB_BLEND_BLUE.u32All = 0;
- r700->CB_BLEND_ALPHA.u32All = 0;
-
- r700->CB_BLEND_CONTROL.u32All = 0;
-
/* Disable color compares */
SETfield(r700->CB_CLRCMP_CONTROL.u32All, CLRCMP_DRAW_ALWAYS,
CLRCMP_FCN_SRC_shift, CLRCMP_FCN_SRC_mask);
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