diff options
Diffstat (limited to 'tests/spec/arb_shader_texture_lod/execution/texgradcube.c')
| -rw-r--r-- | tests/spec/arb_shader_texture_lod/execution/texgradcube.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/tests/spec/arb_shader_texture_lod/execution/texgradcube.c b/tests/spec/arb_shader_texture_lod/execution/texgradcube.c new file mode 100644 index 00000000..90f7ddcc --- /dev/null +++ b/tests/spec/arb_shader_texture_lod/execution/texgradcube.c @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2013 VMware, Inc. + * + * 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 + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, 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 + * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS AND/OR THEIR + * SUPPLIERS 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. + * + * Authors: + * Roland Scheidegger <sroland@vmware.com> + * + * Based on arb_shader_texture_lod-texgrad: + * Marek Olšák <maraeo@gmail.com> + */ + +#include "piglit-util-gl-common.h" + +PIGLIT_GL_TEST_CONFIG_BEGIN + + config.supports_gl_compat_version = 10; + + config.window_width = 512; + config.window_height = 256; + config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE; + +PIGLIT_GL_TEST_CONFIG_END + +#define TEX_WIDTH 256 +#define TEX_HEIGHT 256 + +static const float colors[][3] = { + {1.0, 0.0, 0.0}, + {0.0, 1.0, 0.0}, + {0.0, 0.0, 1.0}, + {1.0, 1.0, 0.0}, + {0.0, 1.0, 1.0}, + {1.0, 0.0, 1.0}, + {0.5, 0.0, 0.5}, + {1.0, 1.0, 1.0}, +}; + +static const char *sh_tex = + "uniform samplerCube tex;" + "void main()" + "{" + " gl_FragColor = textureCube(tex, gl_TexCoord[0].xyz);" + "}"; + +static const char *sh_texgrad = + "#extension GL_ARB_shader_texture_lod : enable\n" + "uniform samplerCube tex;" + "void main()" + "{" + " gl_FragColor = textureCubeGradARB(tex, gl_TexCoord[0].xyz," + " dFdx(gl_TexCoord[0].xyz)," + " dFdy(gl_TexCoord[0].xyz));" + "}"; + +static GLint prog_tex, prog_texgrad; + +void piglit_init(int argc, char **argv) +{ + GLuint tex, fb; + GLenum status; + int i, j, dim; + static GLuint fs_tex, fs_texgrad; + + piglit_require_GLSL(); + piglit_require_extension("GL_EXT_framebuffer_object"); + piglit_require_extension("GL_ARB_shader_texture_lod"); + + fs_tex = piglit_compile_shader_text(GL_FRAGMENT_SHADER, sh_tex); + fs_texgrad = piglit_compile_shader_text(GL_FRAGMENT_SHADER, sh_texgrad); + prog_tex = piglit_link_simple_program(0, fs_tex); + prog_texgrad = piglit_link_simple_program(0, fs_texgrad); + + glGenTextures(1, &tex); + glBindTexture(GL_TEXTURE_CUBE_MAP, tex); + + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); + glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + for (j = GL_TEXTURE_CUBE_MAP_POSITIVE_X; j <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; j++) { + for (i = 0, dim = TEX_WIDTH; dim >0; i++, dim /= 2) { + glTexImage2D(j, i, GL_RGBA, + dim, dim, + 0, + GL_RGBA, GL_UNSIGNED_BYTE, NULL); + } + } + assert(glGetError() == 0); + + glBindTexture(GL_TEXTURE_CUBE_MAP, 0); + glDisable(GL_TEXTURE_CUBE_MAP); + + glGenFramebuffersEXT(1, &fb); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb); + + for (j = GL_TEXTURE_CUBE_MAP_POSITIVE_X; j <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; j++) { + for (i = 0, dim = TEX_WIDTH; dim >0; i++, dim /= 2) { + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + j, + tex, + i); + + status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT); + if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { + fprintf(stderr, "FBO incomplete\n"); + piglit_report_result(PIGLIT_SKIP); + } + + glClearColor(colors[i][0], + colors[i][1], + colors[i][2], + 0.0); + glClear(GL_COLOR_BUFFER_BIT); + + assert(glGetError() == 0); + } + } + + glDeleteFramebuffersEXT(1, &fb); + glBindTexture(GL_TEXTURE_CUBE_MAP, tex); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glFrustum(-0.1, 0.1, -0.1, 0.1, 0.1, 1000.0); + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(-0.5, -0.5, -1.2); + glRotatef(68, 0, 1, 0); + glScalef(2000, 1, 1); + + glEnable(GL_TEXTURE_CUBE_MAP); + glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); + + piglit_set_tolerance_for_bits(7, 7, 7, 7); + + printf("Left: textureCube, Right: textureCubeGradARB\n"); +} + +static void draw_quad() +{ + glBegin(GL_QUADS); + glTexCoord3f(-0.5, -0.5, 1); + glVertex2f(0, 0); + glTexCoord3f(0.5, -0.5, 1); + glVertex2f(1, 0); + glTexCoord3f(0.5, 0.5, 1); + glVertex2f(1, 1); + glTexCoord3f(-0.5, 0.5, 1); + glVertex2f(0, 1); + glEnd(); +} + +enum piglit_result piglit_display(void) +{ + GLboolean pass = GL_TRUE; + + glViewport(0, 0, piglit_width, piglit_height); + glClearColor(0.5, 0.5, 0.5, 0.5); + glClear(GL_COLOR_BUFFER_BIT); + + glViewport(0, 0, piglit_width/2, piglit_height); + glUseProgram(prog_tex); + draw_quad(); + + glViewport(piglit_width/2, 0, piglit_width/2, piglit_height); + glUseProgram(prog_texgrad); + draw_quad(); + + if (!piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width, piglit_height)) + pass = GL_FALSE; + + piglit_present_results(); + + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} |