static void
i915UpdateBlendState(struct gl_context * ctx)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint iab = (i915->state.Blend[I915_BLENDREG_IAB] &
~(IAB_SRC_FACTOR_MASK |
IAB_DST_FACTOR_MASK |
(BLENDFUNC_MASK << IAB_FUNC_SHIFT) | IAB_ENABLE));
GLuint lis6 = (i915->state.Ctx[I915_CTXREG_LIS6] &
~(S6_CBUF_SRC_BLEND_FACT_MASK |
S6_CBUF_DST_BLEND_FACT_MASK | S6_CBUF_BLEND_FUNC_MASK));
GLuint eqRGB = ctx->Color.Blend[0].EquationRGB;
GLuint eqA = ctx->Color.Blend[0].EquationA;
GLuint srcRGB = ctx->Color.Blend[0].SrcRGB;
GLuint dstRGB = ctx->Color.Blend[0].DstRGB;
GLuint srcA = ctx->Color.Blend[0].SrcA;
GLuint dstA = ctx->Color.Blend[0].DstA;
if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
srcRGB = dstRGB = GL_ONE;
}
if (eqA == GL_MIN || eqA == GL_MAX) {
srcA = dstA = GL_ONE;
}
lis6 |= SRC_BLND_FACT(intel_translate_blend_factor(srcRGB));
lis6 |= DST_BLND_FACT(intel_translate_blend_factor(dstRGB));
lis6 |= translate_blend_equation(eqRGB) << S6_CBUF_BLEND_FUNC_SHIFT;
iab |= SRC_ABLND_FACT(intel_translate_blend_factor(srcA));
iab |= DST_ABLND_FACT(intel_translate_blend_factor(dstA));
iab |= translate_blend_equation(eqA) << IAB_FUNC_SHIFT;
if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB)
iab |= IAB_ENABLE;
if (iab != i915->state.Blend[I915_BLENDREG_IAB]) {
i915->state.Blend[I915_BLENDREG_IAB] = iab;
I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
}
if (lis6 != i915->state.Ctx[I915_CTXREG_LIS6]) {
i915->state.Ctx[I915_CTXREG_LIS6] = lis6;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
/* This will catch a logicop blend equation */
i915EvalLogicOpBlendState(ctx);
}
/* None of this state is actually used for anything yet.
*/
static void *
i915_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *blend)
{
struct i915_blend_state *cso_data = CALLOC_STRUCT( i915_blend_state );
{
unsigned eqRGB = blend->rt[0].rgb_func;
unsigned srcRGB = blend->rt[0].rgb_src_factor;
unsigned dstRGB = blend->rt[0].rgb_dst_factor;
unsigned eqA = blend->rt[0].alpha_func;
unsigned srcA = blend->rt[0].alpha_src_factor;
unsigned dstA = blend->rt[0].alpha_dst_factor;
/* Special handling for MIN/MAX filter modes handled at
* state_tracker level.
*/
if (srcA != srcRGB ||
dstA != dstRGB ||
eqA != eqRGB) {
cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
IAB_MODIFY_ENABLE |
IAB_ENABLE |
IAB_MODIFY_FUNC |
IAB_MODIFY_SRC_FACTOR |
IAB_MODIFY_DST_FACTOR |
SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) |
DST_ABLND_FACT(i915_translate_blend_factor(dstA)) |
(i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT));
}
else {
cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
IAB_MODIFY_ENABLE |
0);
}
}
cso_data->modes4 |= (_3DSTATE_MODES_4_CMD |
ENABLE_LOGIC_OP_FUNC |
LOGIC_OP_FUNC(i915_translate_logic_op(blend->logicop_func)));
if (blend->logicop_enable)
cso_data->LIS5 |= S5_LOGICOP_ENABLE;
if (blend->dither)
cso_data->LIS5 |= S5_COLOR_DITHER_ENABLE;
/* XXX here take the target fixup into account */
if ((blend->rt[0].colormask & PIPE_MASK_R) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_RED;
if ((blend->rt[0].colormask & PIPE_MASK_G) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_GREEN;
if ((blend->rt[0].colormask & PIPE_MASK_B) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_BLUE;
if ((blend->rt[0].colormask & PIPE_MASK_A) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_ALPHA;
if (blend->rt[0].blend_enable) {
unsigned funcRGB = blend->rt[0].rgb_func;
unsigned srcRGB = blend->rt[0].rgb_src_factor;
unsigned dstRGB = blend->rt[0].rgb_dst_factor;
cso_data->LIS6 |= (S6_CBUF_BLEND_ENABLE |
SRC_BLND_FACT(i915_translate_blend_factor(srcRGB)) |
DST_BLND_FACT(i915_translate_blend_factor(dstRGB)) |
(i915_translate_blend_func(funcRGB) << S6_CBUF_BLEND_FUNC_SHIFT));
}
return cso_data;
}
