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/*
* Copyright © 2010 Luca Barbieri
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
/** @file spec/arb_color_buffer_float/render.c
*
* Tests that vertex and fragment color clamping affects rendering as
* specified by ARB_color_buffer_float.
*
* It also checks that fog, blending and logic op are done as specified by
* ARB_color_buffer_float.
*
* Note that it's unclear what should happen when ARB_fog is specified in
* the fragment program and fragment clamping is disabled: does the
* color still get clamped before applying fog?
*
* Both ATI and nVidia do that, but they have fixed function fog in the tested
* cards.
* TODO: what happens on GeForce 8xxx, GTX 2xx and GTX 4xx?
*/
#include "common.h"
const char *blend_strings[] = { "disabled", "(ONE, ZERO)", "(CONSTANT_COLOR, ZERO)", "(ONE, ONE)" };
GLenum blend_src[] = { 0, GL_ONE, GL_CONSTANT_COLOR, GL_ONE };
GLenum blend_dst[] = { 0, GL_ZERO, GL_ZERO, GL_ONE };
const char *vp_strings[] = {
"!!ARBvp1.0\n"
"MOV result.position, vertex.position;\n"
"MOV result.color, {7, -2.75, -0.25, 0.75};\n" "END\n",
"!!ARBvp1.0\n"
"MOV result.position, vertex.position;\n"
"MOV result.texcoord[0], {7, -2.75, -0.25, 0.75};\n" "END\n"
};
const char *fp_strings[] = {
"!!ARBfp1.0\n"
"MOV result.color, fragment.color;\n"
"END\n",
"!!ARBfp1.0\n"
"MOV result.color, fragment.texcoord[0];\n"
"END\n",
"!!ARBfp1.0\n"
"OPTION ARB_fog_linear;\n"
"MOV result.color, fragment.color;\n"
"END\n",
"!!ARBfp1.0\n"
"OPTION ARB_fog_linear;\n"
"MOV result.color, fragment.texcoord[0];\n"
"END\n",
};
unsigned vps[2];
unsigned fps[4];
GLboolean test()
{
GLboolean pass = GL_TRUE;
unsigned semantic, blend, logicop, vpmode, fpmode, fog;
unsigned vpmodes = 1 + !!GLEW_ARB_vertex_program;
unsigned fpmodes = 1 + !!GLEW_ARB_fragment_program;
glFogi(GL_FOG_MODE, GL_LINEAR);
for(vert_clamp = 0; vert_clamp < 3; ++vert_clamp)
for(frag_clamp = 0; frag_clamp < 3; ++frag_clamp)
for(semantic = 0; semantic < 2; ++semantic)
for(blend = 0; blend < 4; ++blend)
for(logicop = 0; logicop < 2; ++logicop)
for(vpmode = 0; vpmode < vpmodes; ++vpmode)
for(fpmode = 0; fpmode < fpmodes; ++fpmode)
for(fog = 0; fog < 2; ++fog)
{
unsigned clamped = (semantic == 0 && (clamp_enums[vert_clamp] == GL_TRUE || (clamp_enums[vert_clamp] == GL_FIXED_ONLY_ARB && fixed))) || clamp_enums[frag_clamp] == GL_TRUE || (clamp_enums[frag_clamp] == GL_FIXED_ONLY_ARB && fixed);
float *expected;
GLboolean cpass;
GLboolean opass;
if(!fpmode && semantic)
continue;
sprintf(test_name, "%s: render constant through %s with vertex clamp %s and fragment clamp %s and blending %s and logicop %s using %s and %s%s (expecting %sclamping)", format_name, semantic ? "TEXCOORD0" : "COLOR", clamp_strings[vert_clamp], clamp_strings[frag_clamp], blend_strings[blend], logicop ? "enabled" : "disabled", vpmode ? "ARB_vp" : "ffvp", fpmode ? "ARB_fp" : "fffp", fog ? " with fog" : "", clamped ? "" : "no ");
printf("%s\n", test_name);
glClampColorARB(GL_CLAMP_VERTEX_COLOR_ARB, clamp_enums[vert_clamp]);
glClampColorARB(GL_CLAMP_FRAGMENT_COLOR_ARB, clamp_enums[frag_clamp]);
glColor4f(0.1f, 0.2f, 0.3f, 0.4f);
glTexCoord4f(0.5f, 0.6f, 0.7f, 0.8f);
if(vpmode)
{
glBindProgramARB(GL_VERTEX_PROGRAM_ARB, vps[semantic]);
glEnable(GL_VERTEX_PROGRAM_ARB);
}
else
{
if(semantic == 0)
glColor4f(pixels[0], pixels[1], pixels[2], pixels[3]);
else
glTexCoord4f(pixels[0], pixels[1], pixels[2], pixels[3]);
}
if(fpmode)
{
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, fps[semantic + (fog ? 2 : 0)]);
glEnable(GL_FRAGMENT_PROGRAM_ARB);
}
else
{
if(fog)
glEnable(GL_FOG);
}
glClearColor(0.5, 0.5, 0.5, 0.5);
glClear(GL_COLOR_BUFFER_BIT);
if(blend)
{
glEnable(GL_BLEND);
glBlendFunc(blend_src[blend], blend_dst[blend]);
glBlendColor(2.0f, 2.0f, 2.0f, 2.0f);
}
if(logicop)
glEnable(GL_COLOR_LOGIC_OP);
piglit_draw_rect(-1, -1, 1, 1);
if(logicop)
glDisable(GL_COLOR_LOGIC_OP);
if(blend)
glDisable(GL_BLEND);
if(vpmode)
glDisable(GL_VERTEX_PROGRAM_ARB);
if(fpmode)
glDisable(GL_FRAGMENT_PROGRAM_ARB);
else if(fog)
glDisable(GL_FOG);
if(blend == 2 && !logicop)
{
if(fixed)
expected = clamped_pixels;
else
expected = clamped ? clamped_pixels_mul_2 : pixels_mul_2;
}
else if(blend == 3 && !logicop)
{
if(fixed)
expected = clamped_pixels_plus_half_clamped;
else
expected = clamped ? clamped_pixels_plus_half : pixels_plus_half;
}
else
expected = (clamped || fixed) ? clamped_pixels : pixels;
opass = cpass = piglit_probe_pixel_rgba(0, 0, expected);
if(!cpass && nvidia_driver && clamped && !(semantic == 0 && clamp_enums[vert_clamp] == GL_TRUE) && clamp_enums[frag_clamp] == GL_TRUE && !fixed && fpmode && (!blend || logicop || format == GL_RGBA16F_ARB))
{
printf("nVidia driver known *** MAJOR BUG ***: they don't clamp fragment program results with ARB_fp on either fp32 with no blending or fp16!\n");
opass = GL_TRUE;
}
if(!cpass && nvidia_driver && clamped && !fixed && !fpmode && semantic == 0 && clamp_enums[vert_clamp] != GL_TRUE && clamp_enums[frag_clamp] == GL_TRUE)
{
printf("nVidia driver known *** MAJOR BUG ***: they don't clamp fragment program results with fffp, vertex clamp off and fragment clamp on fp16/fp32!\n");
opass = GL_TRUE;
}
if(!cpass && fog && fpmode)
{
printf("Unclear specification on GL_ARB_fog_*\n");
opass = GL_TRUE;
}
printf("%s: %s\n", (cpass ? "PASS" : (opass ? "XFAIL" : "FAIL")), test_name);
pass = opass && pass;
}
return pass;
}
unsigned
init()
{
if(GLEW_ARB_vertex_program)
{
unsigned i;
for(i = 0; i < 2; ++i)
vps[i] = piglit_compile_program(GL_VERTEX_PROGRAM_ARB, vp_strings[i]);
}
if(GLEW_ARB_fragment_program)
{
unsigned i;
for(i = 0; i < 4; ++i)
fps[i] = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, fp_strings[i]);
}
return TEST_SRT;
}
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