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wined3d: Fix GLSL cmp instruction for INF and NAN arguments.

This commit is contained in:
Fabian Bieler 2007-03-29 19:57:41 +02:00 committed by Alexandre Julliard
parent 30abd4ed15
commit 2843b0f929
1 changed files with 29 additions and 15 deletions
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44
dlls/wined3d/glsl_shader.c
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@ -784,18 +784,26 @@ static DWORD shader_glsl_add_dst_param(SHADER_OPCODE_ARG* arg, const DWORD param
}
/* Append the destination part of the instruction to the buffer, return the effective write mask */
static DWORD shader_glsl_append_dst(SHADER_BUFFER *buffer, SHADER_OPCODE_ARG *arg) {
static DWORD shader_glsl_append_dst_ext(SHADER_BUFFER *buffer, SHADER_OPCODE_ARG *arg, const DWORD param) {
glsl_dst_param_t dst_param;
DWORD mask;
int shift;
shift = (arg->dst & WINED3DSP_DSTSHIFT_MASK) >> WINED3DSP_DSTSHIFT_SHIFT;
mask = shader_glsl_add_dst_param(arg, arg->dst, arg->dst_addr, &dst_param);
shader_addline(buffer, "%s%s = %s(", dst_param.reg_name, dst_param.mask_str, shift_glsl_tab[shift]);
mask = shader_glsl_add_dst_param(arg, param, arg->dst_addr, &dst_param);
if(mask) {
shift = (param & WINED3DSP_DSTSHIFT_MASK) >> WINED3DSP_DSTSHIFT_SHIFT;
shader_addline(buffer, "%s%s = %s(", dst_param.reg_name, dst_param.mask_str, shift_glsl_tab[shift]);
}
return mask;
}
/* Append the destination part of the instruction to the buffer, return the effective write mask */
static DWORD shader_glsl_append_dst(SHADER_BUFFER *buffer, SHADER_OPCODE_ARG *arg) {
return shader_glsl_append_dst_ext(buffer, arg, arg->dst);
}
/** Process GLSL instruction modifiers */
void shader_glsl_add_instruction_modifiers(SHADER_OPCODE_ARG* arg) {
@ -1115,20 +1123,26 @@ void shader_glsl_cmp(SHADER_OPCODE_ARG* arg) {
glsl_src_param_t src0_param;
glsl_src_param_t src1_param;
glsl_src_param_t src2_param;
DWORD write_mask;
size_t mask_size;
DWORD write_mask, cmp_channel = 0;
unsigned int i, j;
write_mask = shader_glsl_append_dst(arg->buffer, arg);
mask_size = shader_glsl_get_write_mask_size(write_mask);
/* Cycle through all source0 channels */
for (i=0; i<4; i++) {
write_mask = 0;
/* Find the destination channels which use the current source0 channel */
for (j=0; j<4; j++) {
if ( ((arg->src[0] >> (WINED3DSP_SWIZZLE_SHIFT + 2*j)) & 0x3) == i ) {
write_mask |= WINED3DSP_WRITEMASK_0 << j;
cmp_channel = WINED3DSP_WRITEMASK_0 << j;
}
}
write_mask = shader_glsl_append_dst_ext(arg->buffer, arg, arg->dst & (~WINED3DSP_SWIZZLE_MASK | write_mask));
if (!write_mask) continue;
shader_glsl_add_src_param(arg, arg->src[0], arg->src_addr[0], write_mask, &src0_param);
shader_glsl_add_src_param(arg, arg->src[1], arg->src_addr[1], write_mask, &src1_param);
shader_glsl_add_src_param(arg, arg->src[2], arg->src_addr[2], write_mask, &src2_param);
shader_glsl_add_src_param(arg, arg->src[0], arg->src_addr[0], cmp_channel, &src0_param);
shader_glsl_add_src_param(arg, arg->src[1], arg->src_addr[1], write_mask, &src1_param);
shader_glsl_add_src_param(arg, arg->src[2], arg->src_addr[2], write_mask, &src2_param);
if (mask_size > 1) {
shader_addline(arg->buffer, "mix(%s, %s, vec%d(lessThan(%s, vec%d(0.0)))));\n",
src1_param.param_str, src2_param.param_str, mask_size, src0_param.param_str, mask_size);
} else {
shader_addline(arg->buffer, "%s >= 0.0 ? %s : %s);\n",
src0_param.param_str, src1_param.param_str, src2_param.param_str);
}