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llvmpipe: Get blending of normalized 8bit unsigned integers working.

This commit is contained in:
José Fonseca 2009-08-03 00:01:27 +01:00
parent a6622e6c54
commit ede73258a7
2 changed files with 339 additions and 107 deletions
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169
src/gallium/drivers/llvmpipe/lp_bld_arit.c
View File

@ -184,7 +184,7 @@ lp_build_one(union lp_type type)
LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
unsigned i;
assert(type.length < LP_MAX_VECTOR_LENGTH);
assert(type.length <= LP_MAX_VECTOR_LENGTH);
elem_type = lp_build_elem_type(type);
@ -224,7 +224,7 @@ lp_build_const_aos(union lp_type type,
unsigned i;
assert(type.length % 4 == 0);
assert(type.length < LP_MAX_VECTOR_LENGTH);
assert(type.length <= LP_MAX_VECTOR_LENGTH);
elem_type = lp_build_elem_type(type);
@ -421,9 +421,9 @@ lp_build_add(struct lp_build_context *bld,
if(type.width * type.length == 128 &&
!type.floating && !type.fixed) {
if(type.width == 8)
intrinsic = type.sign ? "llvm.x86.sse2.adds.b" : "llvm.x86.sse2.addus.b";
intrinsic = type.sign ? "llvm.x86.sse2.padds.b" : "llvm.x86.sse2.paddus.b";
if(type.width == 16)
intrinsic = type.sign ? "llvm.x86.sse2.adds.w" : "llvm.x86.sse2.addus.w";
intrinsic = type.sign ? "llvm.x86.sse2.padds.w" : "llvm.x86.sse2.paddus.w";
}
#endif
@ -468,9 +468,9 @@ lp_build_sub(struct lp_build_context *bld,
if(type.width * type.length == 128 &&
!type.floating && !type.fixed) {
if(type.width == 8)
intrinsic = type.sign ? "llvm.x86.sse2.subs.b" : "llvm.x86.sse2.subus.b";
intrinsic = type.sign ? "llvm.x86.sse2.psubs.b" : "llvm.x86.sse2.psubus.b";
if(type.width == 16)
intrinsic = type.sign ? "llvm.x86.sse2.subs.w" : "llvm.x86.sse2.subus.w";
intrinsic = type.sign ? "llvm.x86.sse2.psubs.w" : "llvm.x86.sse2.psubus.w";
}
#endif
@ -490,11 +490,124 @@ lp_build_sub(struct lp_build_context *bld,
}
/**
* Build shuffle vectors that match PUNPCKLxx and PUNPCKHxx instructions.
*/
static LLVMValueRef
lp_build_unpack_shuffle(unsigned n, unsigned lo_hi)
{
LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
unsigned i, j;
assert(n <= LP_MAX_VECTOR_LENGTH);
assert(lo_hi < 2);
for(i = 0, j = lo_hi*n/2; i < n; i += 2, ++j) {
elems[i + 0] = LLVMConstInt(LLVMInt32Type(), 0 + j, 0);
elems[i + 1] = LLVMConstInt(LLVMInt32Type(), n + j, 0);
}
return LLVMConstVector(elems, n);
}
static LLVMValueRef
lp_build_const_vec(LLVMTypeRef type, unsigned n, long long c)
{
LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
unsigned i;
assert(n <= LP_MAX_VECTOR_LENGTH);
for(i = 0; i < n; ++i)
elems[i] = LLVMConstInt(type, c, 0);
return LLVMConstVector(elems, n);
}
/**
* Normalized 8bit multiplication.
*
* - alpha plus one
*
* makes the following approximation to the division (Sree)
*
* a*b/255 ~= (a*(b + 1)) >> 256
*
* which is the fastest method that satisfies the following OpenGL criteria
*
* 0*0 = 0 and 255*255 = 255
*
* - geometric series
*
* takes the geometric series approximation to the division
*
* t/255 = (t >> 8) + (t >> 16) + (t >> 24) ..
*
* in this case just the first two terms to fit in 16bit arithmetic
*
* t/255 ~= (t + (t >> 8)) >> 8
*
* note that just by itself it doesn't satisfies the OpenGL criteria, as
* 255*255 = 254, so the special case b = 255 must be accounted or roundoff
* must be used
*
* - geometric series plus rounding
*
* when using a geometric series division instead of truncating the result
* use roundoff in the approximation (Jim Blinn)
*
* t/255 ~= (t + (t >> 8) + 0x80) >> 8
*
* achieving the exact results
*
* @sa Alvy Ray Smith, Image Compositing Fundamentals, Tech Memo 4, Aug 15, 1995,
* ftp://ftp.alvyray.com/Acrobat/4_Comp.pdf
* @sa Michael Herf, The "double blend trick", May 2000,
* http://www.stereopsis.com/doubleblend.html
*/
static LLVMValueRef
lp_build_mul_u8n(LLVMBuilderRef builder,
LLVMValueRef a, LLVMValueRef b)
{
static LLVMValueRef c01 = NULL;
static LLVMValueRef c08 = NULL;
static LLVMValueRef c80 = NULL;
LLVMValueRef ab;
if(!c01) c01 = lp_build_const_vec(LLVMInt16Type(), 8, 0x01);
if(!c08) c08 = lp_build_const_vec(LLVMInt16Type(), 8, 0x08);
if(!c80) c80 = lp_build_const_vec(LLVMInt16Type(), 8, 0x80);
#if 0
/* a*b/255 ~= (a*(b + 1)) >> 256 */
b = LLVMBuildAdd(builder, b, c01, "");
ab = LLVMBuildMul(builder, a, b, "");
#else
/* t/255 ~= (t + (t >> 8) + 0x80) >> 8 */
ab = LLVMBuildMul(builder, a, b, "");
ab = LLVMBuildAdd(builder, ab, LLVMBuildLShr(builder, ab, c08, ""), "");
ab = LLVMBuildAdd(builder, ab, c80, "");
#endif
ab = LLVMBuildLShr(builder, ab, c08, "");
return ab;
}
LLVMValueRef
lp_build_mul(struct lp_build_context *bld,
LLVMValueRef a,
LLVMValueRef b)
{
const union lp_type type = bld->type;
if(a == bld->zero)
return bld->zero;
if(a == bld->one)
@ -506,6 +619,50 @@ lp_build_mul(struct lp_build_context *bld,
if(a == bld->undef || b == bld->undef)
return bld->undef;
if(!type.floating && !type.fixed && type.norm) {
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width == 8 && type.length == 16) {
LLVMTypeRef i16x8 = LLVMVectorType(LLVMInt16Type(), 8);
LLVMTypeRef i8x16 = LLVMVectorType(LLVMInt8Type(), 16);
static LLVMValueRef ml = NULL;
static LLVMValueRef mh = NULL;
LLVMValueRef al, ah, bl, bh;
LLVMValueRef abl, abh;
LLVMValueRef ab;
if(!ml) ml = lp_build_unpack_shuffle(16, 0);
if(!mh) mh = lp_build_unpack_shuffle(16, 1);
/* PUNPCKLBW, PUNPCKHBW */
al = LLVMBuildShuffleVector(bld->builder, a, bld->zero, ml, "");
bl = LLVMBuildShuffleVector(bld->builder, b, bld->zero, ml, "");
ah = LLVMBuildShuffleVector(bld->builder, a, bld->zero, mh, "");
bh = LLVMBuildShuffleVector(bld->builder, b, bld->zero, mh, "");
/* NOP */
al = LLVMBuildBitCast(bld->builder, al, i16x8, "");
bl = LLVMBuildBitCast(bld->builder, bl, i16x8, "");
ah = LLVMBuildBitCast(bld->builder, ah, i16x8, "");
bh = LLVMBuildBitCast(bld->builder, bh, i16x8, "");
/* PMULLW, PSRLW, PADDW */
abl = lp_build_mul_u8n(bld->builder, al, bl);
abh = lp_build_mul_u8n(bld->builder, ah, bh);
/* PACKUSWB */
ab = lp_build_intrinsic_binary(bld->builder, "llvm.x86.sse2.packuswb.128" , abl, abh);
/* NOP */
ab = LLVMBuildBitCast(bld->builder, ab, i8x16, "");
return ab;
}
#endif
/* FIXME */
assert(0);
}
if(LLVMIsConstant(a) && LLVMIsConstant(b))
return LLVMConstMul(a, b);

277
src/gallium/drivers/llvmpipe/lp_test_blend.c
View File

@ -39,6 +39,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <float.h>
#include <llvm-c/Core.h>
#include <llvm-c/Analysis.h>
@ -58,15 +59,15 @@
unsigned verbose = 0;
typedef void (*blend_test_ptr_t)(const float *src, const float *dst, const float *const_, float *res);
typedef void (*blend_test_ptr_t)(const void *src, const void *dst, const void *con, void *res);
static LLVMValueRef
add_blend_test(LLVMModuleRef module,
const struct pipe_blend_state *blend)
const struct pipe_blend_state *blend,
union lp_type type)
{
union lp_type type;
LLVMTypeRef vec_type;
LLVMTypeRef args[4];
LLVMValueRef func;
LLVMValueRef src_ptr;
@ -77,20 +78,12 @@ add_blend_test(LLVMModuleRef module,
LLVMBuilderRef builder;
LLVMValueRef src;
LLVMValueRef dst;
LLVMValueRef const_;
LLVMValueRef con;
LLVMValueRef res;
type.value = 0;
type.floating = TRUE;
type.sign = TRUE;
type.norm = TRUE;
type.width = 32;
type.length = 4;
vec_type = lp_build_vec_type(type);
args[0] = LLVMPointerType(LLVMVectorType(LLVMFloatType(), 4), 0);
args[1] = LLVMPointerType(LLVMVectorType(LLVMFloatType(), 4), 0);
args[2] = LLVMPointerType(LLVMVectorType(LLVMFloatType(), 4), 0);
args[3] = LLVMPointerType(LLVMVectorType(LLVMFloatType(), 4), 0);
args[3] = args[2] = args[1] = args[0] = LLVMPointerType(vec_type, 0);
func = LLVMAddFunction(module, "test", LLVMFunctionType(LLVMVoidType(), args, 4, 0));
LLVMSetFunctionCallConv(func, LLVMCCallConv);
src_ptr = LLVMGetParam(func, 0);
@ -104,9 +97,9 @@ add_blend_test(LLVMModuleRef module,
src = LLVMBuildLoad(builder, src_ptr, "src");
dst = LLVMBuildLoad(builder, dst_ptr, "dst");
const_ = LLVMBuildLoad(builder, const_ptr, "const");
con = LLVMBuildLoad(builder, const_ptr, "const");
res = lp_build_blend(builder, blend, type, src, dst, const_, 3);
res = lp_build_blend(builder, blend, type, src, dst, con, 3);
LLVMSetValueName(res, "res");
@ -119,13 +112,10 @@ add_blend_test(LLVMModuleRef module,
}
static void
random_color(float *color)
static float
random_float(void)
{
color[0] = (float)((double)random()/(double)RAND_MAX);
color[1] = (float)((double)random()/(double)RAND_MAX);
color[2] = (float)((double)random()/(double)RAND_MAX);
color[3] = (float)((double)random()/(double)RAND_MAX);
return (float)((double)random()/(double)RAND_MAX);
}
@ -148,7 +138,7 @@ compute_blend_ref_term(unsigned rgb_factor,
const float *factor,
const float *src,
const float *dst,
const float *const_,
const float *con,
float *term)
{
float temp;
@ -186,14 +176,14 @@ compute_blend_ref_term(unsigned rgb_factor,
term[2] = factor[2] * temp; /* B */
break;
case PIPE_BLENDFACTOR_CONST_COLOR:
term[0] = factor[0] * const_[0]; /* R */
term[1] = factor[1] * const_[1]; /* G */
term[2] = factor[2] * const_[2]; /* B */
term[0] = factor[0] * con[0]; /* R */
term[1] = factor[1] * con[1]; /* G */
term[2] = factor[2] * con[2]; /* B */
break;
case PIPE_BLENDFACTOR_CONST_ALPHA:
term[0] = factor[0] * const_[3]; /* R */
term[1] = factor[1] * const_[3]; /* G */
term[2] = factor[2] * const_[3]; /* B */
term[0] = factor[0] * con[3]; /* R */
term[1] = factor[1] * con[3]; /* G */
term[2] = factor[2] * con[3]; /* B */
break;
case PIPE_BLENDFACTOR_SRC1_COLOR:
assert(0); /* to do */
@ -227,14 +217,14 @@ compute_blend_ref_term(unsigned rgb_factor,
term[2] = factor[2] * (1.0f - dst[2]); /* B */
break;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
term[0] = factor[0] * (1.0f - const_[0]); /* R */
term[1] = factor[1] * (1.0f - const_[1]); /* G */
term[2] = factor[2] * (1.0f - const_[2]); /* B */
term[0] = factor[0] * (1.0f - con[0]); /* R */
term[1] = factor[1] * (1.0f - con[1]); /* G */
term[2] = factor[2] * (1.0f - con[2]); /* B */
break;
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
term[0] = factor[0] * (1.0f - const_[3]); /* R */
term[1] = factor[1] * (1.0f - const_[3]); /* G */
term[2] = factor[2] * (1.0f - const_[3]); /* B */
term[0] = factor[0] * (1.0f - con[3]); /* R */
term[1] = factor[1] * (1.0f - con[3]); /* G */
term[2] = factor[2] * (1.0f - con[3]); /* B */
break;
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
assert(0); /* to do */
@ -266,7 +256,7 @@ compute_blend_ref_term(unsigned rgb_factor,
break;
case PIPE_BLENDFACTOR_CONST_COLOR:
case PIPE_BLENDFACTOR_CONST_ALPHA:
term[3] = factor[3] * const_[3]; /* A */
term[3] = factor[3] * con[3]; /* A */
break;
case PIPE_BLENDFACTOR_ZERO:
term[3] = 0.0f; /* A */
@ -281,7 +271,7 @@ compute_blend_ref_term(unsigned rgb_factor,
break;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
term[3] = factor[3] * (1.0f - const_[3]);
term[3] = factor[3] * (1.0f - con[3]);
break;
default:
assert(0);
@ -293,14 +283,14 @@ static void
compute_blend_ref(const struct pipe_blend_state *blend,
const float *src,
const float *dst,
const float *const_,
const float *con,
float *res)
{
float src_term[4];
float dst_term[4];
compute_blend_ref_term(blend->rgb_src_factor, blend->alpha_src_factor, src, src, dst, const_, src_term);
compute_blend_ref_term(blend->rgb_dst_factor, blend->alpha_dst_factor, dst, src, dst, const_, dst_term);
compute_blend_ref_term(blend->rgb_src_factor, blend->alpha_src_factor, src, src, dst, con, src_term);
compute_blend_ref_term(blend->rgb_dst_factor, blend->alpha_dst_factor, dst, src, dst, con, dst_term);
/*
* Combine RGB terms
@ -361,7 +351,8 @@ compute_blend_ref(const struct pipe_blend_state *blend,
static boolean
test_one(const struct pipe_blend_state *blend)
test_one(const struct pipe_blend_state *blend,
union lp_type type)
{
LLVMModuleRef module = NULL;
LLVMValueRef func = NULL;
@ -371,11 +362,11 @@ test_one(const struct pipe_blend_state *blend)
char *error = NULL;
blend_test_ptr_t blend_test_ptr;
boolean success;
unsigned i, j;
unsigned i, j, k;
module = LLVMModuleCreateWithName("test");
func = add_blend_test(module, blend);
func = add_blend_test(module, blend, type);
if(LLVMVerifyModule(module, LLVMPrintMessageAction, &error)) {
LLVMDumpModule(module);
@ -412,28 +403,97 @@ test_one(const struct pipe_blend_state *blend)
success = TRUE;
for(i = 0; i < 10; ++i) {
float src[4];
float dst[4];
float const_[4];
float ref[4];
float res[4];
if(type.floating && type.width == 32) {
float src[LP_MAX_VECTOR_LENGTH];
float dst[LP_MAX_VECTOR_LENGTH];
float con[LP_MAX_VECTOR_LENGTH];
float ref[LP_MAX_VECTOR_LENGTH];
float res[LP_MAX_VECTOR_LENGTH];
random_color(src);
random_color(dst);
random_color(const_);
for(j = 0; j < type.length; ++j) {
src[j] = random_float();
dst[j] = random_float();
con[j] = random_float();
}
compute_blend_ref(blend, src, dst, const_, ref);
for(j = 0; j < type.length; j += 4)
compute_blend_ref(blend, src + j, dst + j, con + j, ref + j);
blend_test_ptr(src, dst, const_, res);
blend_test_ptr(src, dst, con, res);
for(j = 0; j < 4; ++j)
if(res[j] != ref[j])
success = FALSE;
for(j = 0; j < type.length; ++j)
if(fabs(res[j] - ref[j]) > FLT_EPSILON)
success = FALSE;
if (!success) {
fprintf(stderr, "FAILED\n");
fprintf(stderr, " Result: ");
for(j = 0; j < type.length; ++j)
fprintf(stderr, " %f", res[j]);
fprintf(stderr, "\n");
fprintf(stderr, " Expected: ");
for(j = 0; j < type.length; ++j)
fprintf(stderr, " %f", ref[j]);
fprintf(stderr, "\n");
}
}
else if(!type.floating && !type.fixed && !type.sign && type.norm && type.width == 8) {
uint8_t src[LP_MAX_VECTOR_LENGTH];
uint8_t dst[LP_MAX_VECTOR_LENGTH];
uint8_t con[LP_MAX_VECTOR_LENGTH];
uint8_t ref[LP_MAX_VECTOR_LENGTH];
uint8_t res[LP_MAX_VECTOR_LENGTH];
for(j = 0; j < type.length; ++j) {
src[j] = random() & 0xff;
dst[j] = random() & 0xff;
con[j] = random() & 0xff;
}
for(j = 0; j < type.length; j += 4) {
float srcf[4];
float dstf[4];
float conf[4];
float reff[4];
for(k = 0; k < 4; ++k) {
srcf[k] = (1.0f/255.0f)*src[j + k];
dstf[k] = (1.0f/255.0f)*dst[j + k];
conf[k] = (1.0f/255.0f)*con[j + k];
}
compute_blend_ref(blend, srcf, dstf, conf, reff);
for(k = 0; k < 4; ++k)
ref[j + k] = (uint8_t)(reff[k]*255.0f + 0.5f);
}
blend_test_ptr(src, dst, con, res);
for(j = 0; j < type.length; ++j) {
int delta = (int)res[j] - (int)ref[j];
if (delta < 0)
delta = -delta;
if(delta > 1)
success = FALSE;
}
if (!success) {
fprintf(stderr, "FAILED\n");
fprintf(stderr, " Result: ");
for(j = 0; j < type.length; ++j)
fprintf(stderr, " %3u", res[j]);
fprintf(stderr, "\n");
fprintf(stderr, " Expected: ");
for(j = 0; j < type.length; ++j)
fprintf(stderr, " %3u", ref[j]);
fprintf(stderr, "\n");
}
}
else
assert(0);
if (!success) {
fprintf(stderr, "FAILED\n");
fprintf(stderr, " Result: %f %f %f %f\n", res[0], res[1], res[2], res[3]);
fprintf(stderr, " %f %f %f %f\n", ref[0], ref[1], ref[2], ref[3]);
LLVMDumpModule(module);
LLVMWriteBitcodeToFile(module, "blend.bc");
fprintf(stderr, "blend.bc written\n");
@ -497,8 +557,16 @@ blend_funcs[] = {
};
const union lp_type blend_types[] = {
/* float, fixed, sign, norm, width, len */
{{ TRUE, FALSE, TRUE, TRUE, 32, 4 }}, /* f32 x 4 */
{{ FALSE, FALSE, FALSE, TRUE, 8, 16 }}, /* u8n x 16 */
};
const unsigned num_funcs = sizeof(blend_funcs)/sizeof(blend_funcs[0]);
const unsigned num_factors = sizeof(blend_factors)/sizeof(blend_factors[0]);
const unsigned num_types = sizeof(blend_types)/sizeof(blend_types[0]);
static boolean
@ -511,6 +579,7 @@ test_all(void)
const struct value_name_pair *alpha_src_factor;
const struct value_name_pair *alpha_dst_factor;
struct pipe_blend_state blend;
const union lp_type *type;
bool success = TRUE;
for(rgb_func = blend_funcs; rgb_func < &blend_funcs[num_funcs]; ++rgb_func) {
@ -519,33 +588,35 @@ test_all(void)
for(rgb_dst_factor = blend_factors; rgb_dst_factor <= rgb_src_factor; ++rgb_dst_factor) {
for(alpha_src_factor = blend_factors; alpha_src_factor < &blend_factors[num_factors]; ++alpha_src_factor) {
for(alpha_dst_factor = blend_factors; alpha_dst_factor <= alpha_src_factor; ++alpha_dst_factor) {
for(type = blend_types; type < &blend_types[num_types]; ++type) {
if(rgb_dst_factor->value == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
alpha_dst_factor->value == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE)
continue;
if(rgb_dst_factor->value == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
alpha_dst_factor->value == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE)
continue;
if(verbose >= 1)
fprintf(stderr,
"%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s ...\n",
"rgb_func", rgb_func->name,
"rgb_src_factor", rgb_src_factor->name,
"rgb_dst_factor", rgb_dst_factor->name,
"alpha_func", alpha_func->name,
"alpha_src_factor", alpha_src_factor->name,
"alpha_dst_factor", alpha_dst_factor->name);
if(verbose >= 1)
fprintf(stderr,
"%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s ...\n",
"rgb_func", rgb_func->name,
"rgb_src_factor", rgb_src_factor->name,
"rgb_dst_factor", rgb_dst_factor->name,
"alpha_func", alpha_func->name,
"alpha_src_factor", alpha_src_factor->name,
"alpha_dst_factor", alpha_dst_factor->name);
memset(&blend, 0, sizeof blend);
blend.blend_enable = 1;
blend.rgb_func = rgb_func->value;
blend.rgb_src_factor = rgb_src_factor->value;
blend.rgb_dst_factor = rgb_dst_factor->value;
blend.alpha_func = alpha_func->value;
blend.alpha_src_factor = alpha_src_factor->value;
blend.alpha_dst_factor = alpha_dst_factor->value;
memset(&blend, 0, sizeof blend);
blend.blend_enable = 1;
blend.rgb_func = rgb_func->value;
blend.rgb_src_factor = rgb_src_factor->value;
blend.rgb_dst_factor = rgb_dst_factor->value;
blend.alpha_func = alpha_func->value;
blend.alpha_src_factor = alpha_src_factor->value;
blend.alpha_dst_factor = alpha_dst_factor->value;
if(!test_one(&blend))
success = FALSE;
if(!test_one(&blend, *type))
success = FALSE;
}
}
}
}
@ -567,6 +638,7 @@ test_some(unsigned long n)
const struct value_name_pair *alpha_src_factor;
const struct value_name_pair *alpha_dst_factor;
struct pipe_blend_state blend;
const union lp_type *type;
unsigned long i;
bool success = TRUE;
@ -584,28 +656,31 @@ test_some(unsigned long n)
alpha_dst_factor = &blend_factors[random() % num_factors];
} while(alpha_dst_factor->value == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE);
if(verbose >= 1)
fprintf(stderr,
"%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s ...\n",
"rgb_func", rgb_func->name,
"rgb_src_factor", rgb_src_factor->name,
"rgb_dst_factor", rgb_dst_factor->name,
"alpha_func", alpha_func->name,
"alpha_src_factor", alpha_src_factor->name,
"alpha_dst_factor", alpha_dst_factor->name);
for(type = blend_types; type < &blend_types[num_types]; ++type) {
memset(&blend, 0, sizeof blend);
blend.blend_enable = 1;
blend.rgb_func = rgb_func->value;
blend.rgb_src_factor = rgb_src_factor->value;
blend.rgb_dst_factor = rgb_dst_factor->value;
blend.alpha_func = alpha_func->value;
blend.alpha_src_factor = alpha_src_factor->value;
blend.alpha_dst_factor = alpha_dst_factor->value;
if(verbose >= 1)
fprintf(stderr,
"%s=%s %s=%s %s=%s %s=%s %s=%s %s=%s ...\n",
"rgb_func", rgb_func->name,
"rgb_src_factor", rgb_src_factor->name,
"rgb_dst_factor", rgb_dst_factor->name,
"alpha_func", alpha_func->name,
"alpha_src_factor", alpha_src_factor->name,
"alpha_dst_factor", alpha_dst_factor->name);
if(!test_one(&blend))
success = FALSE;
memset(&blend, 0, sizeof blend);
blend.blend_enable = 1;
blend.rgb_func = rgb_func->value;
blend.rgb_src_factor = rgb_src_factor->value;
blend.rgb_dst_factor = rgb_dst_factor->value;
blend.alpha_func = alpha_func->value;
blend.alpha_src_factor = alpha_src_factor->value;
blend.alpha_dst_factor = alpha_dst_factor->value;
if(!test_one(&blend, *type))
success = FALSE;
}
}
return success;