#include "pipe/p_state.h"
#include "util/u_debug.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
#include "gallivm/lp_bld_type.h"
#include "gallivm/lp_bld_const.h"
struct lp_build_blend_aos_context
{
struct lp_build_context base;
-
+
LLVMValueRef src;
+ LLVMValueRef src_alpha;
+ LLVMValueRef src1;
+ LLVMValueRef src1_alpha;
LLVMValueRef dst;
LLVMValueRef const_;
+ LLVMValueRef const_alpha;
+ boolean has_dst_alpha;
LLVMValueRef inv_src;
+ LLVMValueRef inv_src_alpha;
LLVMValueRef inv_dst;
LLVMValueRef inv_const;
+ LLVMValueRef inv_const_alpha;
LLVMValueRef saturate;
LLVMValueRef rgb_src_factor;
unsigned factor,
boolean alpha)
{
+ LLVMValueRef src_alpha = bld->src_alpha ? bld->src_alpha : bld->src;
+ LLVMValueRef src1_alpha = bld->src1_alpha ? bld->src1_alpha : bld->src1;
+ LLVMValueRef const_alpha = bld->const_alpha ? bld->const_alpha : bld->const_;
+
switch (factor) {
case PIPE_BLENDFACTOR_ZERO:
return bld->base.zero;
case PIPE_BLENDFACTOR_ONE:
return bld->base.one;
case PIPE_BLENDFACTOR_SRC_COLOR:
- case PIPE_BLENDFACTOR_SRC_ALPHA:
return bld->src;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ return src_alpha;
case PIPE_BLENDFACTOR_DST_COLOR:
case PIPE_BLENDFACTOR_DST_ALPHA:
return bld->dst;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
- if(alpha)
+ if (alpha)
return bld->base.one;
else {
- if(!bld->inv_dst)
- bld->inv_dst = lp_build_comp(&bld->base, bld->dst);
- if(!bld->saturate)
- bld->saturate = lp_build_min(&bld->base, bld->src, bld->inv_dst);
+ /*
+ * If there's no dst alpha the complement is zero but for unclamped
+ * float inputs (or snorm inputs) min can be non-zero (negative).
+ */
+ if (!bld->saturate) {
+ if (!bld->has_dst_alpha) {
+ bld->saturate = lp_build_min(&bld->base, src_alpha, bld->base.zero);
+ }
+ else if (bld->base.type.norm && bld->base.type.sign) {
+ /*
+ * The complement/min totally doesn't work, since
+ * the complement is in range [0,2] but the other
+ * min input is [-1,1]. However, we can just clamp to 0
+ * before doing the complement...
+ */
+ LLVMValueRef inv_dst;
+ inv_dst = lp_build_max(&bld->base, bld->base.zero, bld->dst);
+ inv_dst = lp_build_comp(&bld->base, inv_dst);
+ bld->saturate = lp_build_min(&bld->base, src_alpha, inv_dst);
+ } else {
+ if (!bld->inv_dst) {
+ bld->inv_dst = lp_build_comp(&bld->base, bld->dst);
+ }
+ bld->saturate = lp_build_min(&bld->base, src_alpha, bld->inv_dst);
+ }
+ }
return bld->saturate;
}
case PIPE_BLENDFACTOR_CONST_COLOR:
- case PIPE_BLENDFACTOR_CONST_ALPHA:
return bld->const_;
+ case PIPE_BLENDFACTOR_CONST_ALPHA:
+ return const_alpha;
case PIPE_BLENDFACTOR_SRC1_COLOR:
+ return bld->src1;
case PIPE_BLENDFACTOR_SRC1_ALPHA:
- /* TODO */
- assert(0);
- return bld->base.zero;
+ return src1_alpha;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
- case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
- if(!bld->inv_src)
+ if (!bld->inv_src)
bld->inv_src = lp_build_comp(&bld->base, bld->src);
return bld->inv_src;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ if (!bld->inv_src_alpha)
+ bld->inv_src_alpha = lp_build_comp(&bld->base, src_alpha);
+ return bld->inv_src_alpha;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
- if(!bld->inv_dst)
+ if (!bld->inv_dst)
bld->inv_dst = lp_build_comp(&bld->base, bld->dst);
return bld->inv_dst;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
- case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
- if(!bld->inv_const)
+ if (!bld->inv_const)
bld->inv_const = lp_build_comp(&bld->base, bld->const_);
return bld->inv_const;
+ case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
+ if (!bld->inv_const_alpha)
+ bld->inv_const_alpha = lp_build_comp(&bld->base, const_alpha);
+ return bld->inv_const_alpha;
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
+ return lp_build_comp(&bld->base, bld->src1);
case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
- /* TODO */
- assert(0);
- return bld->base.zero;
+ return lp_build_comp(&bld->base, src1_alpha);
default:
assert(0);
return bld->base.zero;
LLVMValueRef rgb,
LLVMValueRef alpha,
enum lp_build_blend_swizzle rgb_swizzle,
- unsigned alpha_swizzle)
+ unsigned alpha_swizzle,
+ unsigned num_channels)
{
LLVMValueRef swizzled_rgb;
swizzled_rgb = rgb;
break;
case LP_BUILD_BLEND_SWIZZLE_AAAA:
- swizzled_rgb = lp_build_swizzle_scalar_aos(&bld->base, rgb, alpha_swizzle);
+ swizzled_rgb = lp_build_swizzle_scalar_aos(&bld->base, rgb, alpha_swizzle, num_channels);
break;
default:
assert(0);
if (rgb != alpha) {
swizzled_rgb = lp_build_select_aos(&bld->base, 1 << alpha_swizzle,
- alpha, swizzled_rgb);
+ alpha, swizzled_rgb,
+ num_channels);
}
return swizzled_rgb;
}
-
/**
* @sa http://www.opengl.org/sdk/docs/man/xhtml/glBlendFuncSeparate.xml
*/
lp_build_blend_factor(struct lp_build_blend_aos_context *bld,
unsigned rgb_factor,
unsigned alpha_factor,
- unsigned alpha_swizzle)
+ unsigned alpha_swizzle,
+ unsigned num_channels)
{
LLVMValueRef rgb_factor_, alpha_factor_;
enum lp_build_blend_swizzle rgb_swizzle;
+ if (alpha_swizzle == PIPE_SWIZZLE_X && num_channels == 1) {
+ return lp_build_blend_factor_unswizzled(bld, alpha_factor, TRUE);
+ }
+
rgb_factor_ = lp_build_blend_factor_unswizzled(bld, rgb_factor, FALSE);
- if (alpha_swizzle != UTIL_FORMAT_SWIZZLE_NONE) {
+ if (alpha_swizzle != PIPE_SWIZZLE_NONE) {
rgb_swizzle = lp_build_blend_factor_swizzle(rgb_factor);
alpha_factor_ = lp_build_blend_factor_unswizzled(bld, alpha_factor, TRUE);
- return lp_build_blend_swizzle(bld, rgb_factor_, alpha_factor_, rgb_swizzle, alpha_swizzle);
+ return lp_build_blend_swizzle(bld, rgb_factor_, alpha_factor_, rgb_swizzle,
+ alpha_swizzle, num_channels);
} else {
return rgb_factor_;
}
* @param blend the blend state of the shader variant
* @param cbuf_format format of the colour buffer
* @param type data type of the pixel vector
- * @param rt rt number
+ * @param rt render target index
* @param src blend src
+ * @param src_alpha blend src alpha (if not included in src)
+ * @param src1 second blend src (for dual source blend)
+ * @param src1_alpha second blend src alpha (if not included in src1)
* @param dst blend dst
* @param mask optional mask to apply to the blending result
* @param const_ const blend color
+ * @param const_alpha const blend color alpha (if not included in const_)
* @param swizzle swizzle values for RGBA
*
* @return the result of blending src and dst
LLVMValueRef
lp_build_blend_aos(struct gallivm_state *gallivm,
const struct pipe_blend_state *blend,
- const enum pipe_format *cbuf_format,
+ enum pipe_format cbuf_format,
struct lp_type type,
unsigned rt,
LLVMValueRef src,
+ LLVMValueRef src_alpha,
+ LLVMValueRef src1,
+ LLVMValueRef src1_alpha,
LLVMValueRef dst,
LLVMValueRef mask,
LLVMValueRef const_,
- const unsigned char swizzle[4])
+ LLVMValueRef const_alpha,
+ const unsigned char swizzle[4],
+ int nr_channels)
{
const struct pipe_rt_blend_state * state = &blend->rt[rt];
+ const struct util_format_description * desc;
struct lp_build_blend_aos_context bld;
LLVMValueRef src_factor, dst_factor;
LLVMValueRef result;
- unsigned alpha_swizzle = swizzle[3];
- boolean fullcolormask;
+ unsigned alpha_swizzle = PIPE_SWIZZLE_NONE;
+ unsigned i;
+
+ desc = util_format_description(cbuf_format);
/* Setup build context */
memset(&bld, 0, sizeof bld);
lp_build_context_init(&bld.base, gallivm, type);
bld.src = src;
+ bld.src1 = src1;
bld.dst = dst;
bld.const_ = const_;
+ bld.src_alpha = src_alpha;
+ bld.src1_alpha = src1_alpha;
+ bld.const_alpha = const_alpha;
+ bld.has_dst_alpha = FALSE;
+
+ /* Find the alpha channel if not provided separately */
+ if (!src_alpha) {
+ for (i = 0; i < 4; ++i) {
+ if (swizzle[i] == 3) {
+ alpha_swizzle = i;
+ }
+ }
+ /*
+ * Note that we may get src_alpha included from source (and 4 channels)
+ * even if the destination doesn't have an alpha channel (for rgbx
+ * formats). Generally this shouldn't make much of a difference (we're
+ * relying on blend factors being sanitized already if there's no
+ * dst alpha).
+ */
+ bld.has_dst_alpha = desc->swizzle[3] <= PIPE_SWIZZLE_W;
+ }
- if (swizzle[3] > UTIL_FORMAT_SWIZZLE_W || swizzle[3] == swizzle[0])
- alpha_swizzle = UTIL_FORMAT_SWIZZLE_NONE;
-
- if (!state->blend_enable) {
+ if (blend->logicop_enable) {
+ if (!type.floating) {
+ result = lp_build_logicop(gallivm->builder, blend->logicop_func, src, dst);
+ }
+ else {
+ result = src;
+ }
+ } else if (!state->blend_enable) {
result = src;
} else {
- boolean rgb_alpha_same = state->rgb_src_factor == state->rgb_dst_factor && state->alpha_src_factor == state->alpha_dst_factor;
- assert(rgb_alpha_same || alpha_swizzle != UTIL_FORMAT_SWIZZLE_NONE);
+ boolean rgb_alpha_same = (state->rgb_src_factor == state->rgb_dst_factor &&
+ state->alpha_src_factor == state->alpha_dst_factor) ||
+ nr_channels == 1;
+ boolean alpha_only = nr_channels == 1 && alpha_swizzle == PIPE_SWIZZLE_X;
src_factor = lp_build_blend_factor(&bld, state->rgb_src_factor,
- state->alpha_src_factor, alpha_swizzle);
+ state->alpha_src_factor,
+ alpha_swizzle,
+ nr_channels);
+
dst_factor = lp_build_blend_factor(&bld, state->rgb_dst_factor,
- state->alpha_dst_factor, alpha_swizzle);
+ state->alpha_dst_factor,
+ alpha_swizzle,
+ nr_channels);
result = lp_build_blend(&bld.base,
state->rgb_func,
- state->rgb_src_factor,
- state->rgb_dst_factor,
+ alpha_only ? state->alpha_src_factor : state->rgb_src_factor,
+ alpha_only ? state->alpha_dst_factor : state->rgb_dst_factor,
src,
dst,
src_factor,
rgb_alpha_same,
false);
- if(state->rgb_func != state->alpha_func && alpha_swizzle != UTIL_FORMAT_SWIZZLE_NONE) {
+ if (state->rgb_func != state->alpha_func && nr_channels > 1 &&
+ alpha_swizzle != PIPE_SWIZZLE_NONE) {
LLVMValueRef alpha;
alpha = lp_build_blend(&bld.base,
result,
alpha,
LP_BUILD_BLEND_SWIZZLE_RGBA,
- alpha_swizzle);
+ alpha_swizzle,
+ nr_channels);
}
}
/* Check if color mask is necessary */
- fullcolormask = util_format_colormask_full(util_format_description(cbuf_format[rt]), state->colormask);
-
- if (!fullcolormask) {
+ if (!util_format_colormask_full(desc, state->colormask)) {
LLVMValueRef color_mask;
- color_mask = lp_build_const_mask_aos_swizzled(gallivm, bld.base.type, state->colormask, swizzle);
+ color_mask = lp_build_const_mask_aos_swizzled(gallivm, bld.base.type,
+ state->colormask, nr_channels, swizzle);
lp_build_name(color_mask, "color_mask");
/* Combine with input mask if necessary */
if (mask) {
+ /* We can be blending floating values but masks are always integer... */
+ unsigned floating = bld.base.type.floating;
+ bld.base.type.floating = 0;
+
mask = lp_build_and(&bld.base, color_mask, mask);
+
+ bld.base.type.floating = floating;
} else {
mask = color_mask;
}
projects / mesa.git / blobdiff