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wined3d: Revert "WineD3D: use CMP instead of SLT and SGE in sRGB correction". 

This reverts patch ba35760f9f.

The original patch did not achive its goal, because CMP is a macro that is
expanded to SLT, SGE, MUL, MAD, at least on nvidia hardware. To make matters
worse, it uses a temporary register, and the assembler usually is not clever
enough to find a free temporary from the shader code. If we generate the code
outselves we can pick one of our temps for this job.
This commit is contained in:
Stefan Dösinger 2009-05-26 16:01:00 +02:00 committed by Alexandre Julliard
parent 8665ee5906
commit 050735be79
1 changed files with 23 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
dlls/wined3d/arb_program_shader.c
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@ -2018,7 +2018,7 @@ static GLuint create_arb_blt_fragment_program(const WineD3D_GL_Info *gl_info, en
}
static void arbfp_add_sRGB_correction(SHADER_BUFFER *buffer, const char *fragcolor, const char *tmp1,
const char *tmp2, const char *tmp3) {
const char *tmp2, const char *tmp3, const char *tmp4) {
/* Perform sRGB write correction. See GLX_EXT_framebuffer_sRGB */
/* Calculate the > 0.0031308 case */
@ -2029,9 +2029,14 @@ static void arbfp_add_sRGB_correction(SHADER_BUFFER *buffer, const char *fragcol
shader_addline(buffer, "SUB %s, %s, srgb_consts2.x;\n", tmp1, tmp1);
/* Calculate the < case */
shader_addline(buffer, "MUL %s, srgb_consts1.x, %s;\n", tmp2, fragcolor);
/* Subtract the comparison value from the fragcolor and use CMP to pick either the > case * or the < case */
shader_addline(buffer, "SUB %s, %s, srgb_consts1.y;\n", tmp3, fragcolor);
shader_addline(buffer, "CMP result.color.xyz, %s, %s, %s;\n", tmp3, tmp2, tmp1);
/* Get 1.0 / 0.0 masks for > 0.0031308 and < 0.0031308 */
shader_addline(buffer, "SLT %s, srgb_consts1.y, %s;\n", tmp3, fragcolor);
shader_addline(buffer, "SGE %s, srgb_consts1.y, %s;\n", tmp4, fragcolor);
/* Store the components > 0.0031308 in the destination */
shader_addline(buffer, "MUL %s, %s, %s;\n", fragcolor, tmp1, tmp3);
/* Add the components that are < 0.0031308 */
shader_addline(buffer, "MAD result.color.xyz, %s, %s, %s;\n", tmp2, tmp4, fragcolor);
/* [0.0;1.0] clamping. Not needed, this is done implicitly */
}
/* GL locking is done by the caller */
@ -2046,9 +2051,9 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShaderImpl *This,
char fragcolor[16];
DWORD *lconst_map = local_const_mapping((IWineD3DBaseShaderImpl *) This);
struct shader_arb_ctx_priv priv_ctx;
BOOL dcl_tmp = args->super.srgb_correction;
BOOL dcl_tmp = args->super.srgb_correction, dcl_td = FALSE;
char srgbtmp[3][4];
char srgbtmp[4][4];
unsigned int i, found = 0;
for(i = 0; i < This->baseShader.limits.temporary; i++) {
@ -2060,23 +2065,30 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShaderImpl *This,
if(reg_maps->temporary[i]) {
sprintf(srgbtmp[found], "R%u", i);
found++;
if(found == 3) break;
if(found == 4) break;
}
}
switch(found) {
case 3: dcl_tmp = FALSE; break;
case 4: dcl_tmp = FALSE; break;
case 0:
sprintf(srgbtmp[0], "TA");
sprintf(srgbtmp[1], "TB");
sprintf(srgbtmp[2], "TC");
sprintf(srgbtmp[3], "TD");
dcl_td = TRUE;
break;
case 1:
sprintf(srgbtmp[1], "TA");
sprintf(srgbtmp[2], "TB");
sprintf(srgbtmp[3], "TC");
break;
case 2:
sprintf(srgbtmp[2], "TA");
sprintf(srgbtmp[3], "TB");
break;
case 3:
sprintf(srgbtmp[3], "TA");
break;
}
@ -2116,6 +2128,7 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShaderImpl *This,
shader_addline(buffer, "TEMP TA;\n"); /* Used for modifiers */
shader_addline(buffer, "TEMP TB;\n"); /* Used for modifiers */
shader_addline(buffer, "TEMP TC;\n"); /* Used for modifiers */
if(dcl_td) shader_addline(buffer, "TEMP TD;\n"); /* Used for sRGB writing */
shader_addline(buffer, "PARAM coefdiv = { 0.5, 0.25, 0.125, 0.0625 };\n");
shader_addline(buffer, "PARAM coefmul = { 2, 4, 8, 16 };\n");
shader_addline(buffer, "PARAM one = { 1.0, 1.0, 1.0, 1.0 };\n");
@ -2150,7 +2163,7 @@ static GLuint shader_arb_generate_pshader(IWineD3DPixelShaderImpl *This,
shader_generate_main((IWineD3DBaseShader *)This, buffer, reg_maps, function, &priv_ctx);
if(args->super.srgb_correction) {
arbfp_add_sRGB_correction(buffer, fragcolor, srgbtmp[0], srgbtmp[1], srgbtmp[2]);
arbfp_add_sRGB_correction(buffer, fragcolor, srgbtmp[0], srgbtmp[1], srgbtmp[2], srgbtmp[3]);
shader_addline(buffer, "MOV result.color.a, %s;\n", fragcolor);
} else if(reg_maps->shader_version.major < 2) {
shader_addline(buffer, "MOV result.color, %s;\n", fragcolor);
@ -3609,7 +3622,7 @@ static GLuint gen_arbfp_ffp_shader(const struct ffp_frag_settings *settings, IWi
if(settings->sRGB_write) {
shader_addline(&buffer, "MAD ret, fragment.color.secondary, specular_enable, %s;\n", final_combiner_src);
arbfp_add_sRGB_correction(&buffer, "ret", "arg0", "arg1", "arg2");
arbfp_add_sRGB_correction(&buffer, "ret", "arg0", "arg1", "arg2", "tempreg");
shader_addline(&buffer, "MOV result.color.w, ret.w;\n");
} else {
shader_addline(&buffer, "MAD result.color, fragment.color.secondary, specular_enable, %s;\n", final_combiner_src);