diff options
author | Dave Airlie <airlied@redhat.com> | 2011-08-25 13:36:04 +0100 |
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committer | Dave Airlie <airlied@redhat.com> | 2011-08-26 11:19:15 +0100 |
commit | 28be11d657037caa323bb4a066a30ddb7ecafa5c (patch) | |
tree | cedc6d3e236283df345bd71e23355414e70e1d89 | |
parent | 894e3d21064a69bb06f69c995a279fa615cfc7e3 (diff) |
fs-texelFetch-2D: add a test for the GLSL 1.30 texelFetch function (v2)
This is just an initial simple test that just does enough to test TXF
development.
v2: add some lod testing, not sure what is defined at 1x1 and 2x2 miplevels.
Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r-- | tests/spec/glsl-1.30/execution/CMakeLists.gl.txt | 1 | ||||
-rw-r--r-- | tests/spec/glsl-1.30/execution/fs-texelFetch-2D.c | 130 |
2 files changed, 131 insertions, 0 deletions
diff --git a/tests/spec/glsl-1.30/execution/CMakeLists.gl.txt b/tests/spec/glsl-1.30/execution/CMakeLists.gl.txt index d8b9e1c13..2b0012432 100644 --- a/tests/spec/glsl-1.30/execution/CMakeLists.gl.txt +++ b/tests/spec/glsl-1.30/execution/CMakeLists.gl.txt @@ -14,3 +14,4 @@ link_libraries ( ) add_executable (fs-textureSize-2D fs-textureSize-2D.c) +add_executable (fs-texelFetch-2D fs-texelFetch-2D.c) diff --git a/tests/spec/glsl-1.30/execution/fs-texelFetch-2D.c b/tests/spec/glsl-1.30/execution/fs-texelFetch-2D.c new file mode 100644 index 000000000..6d7cc76f1 --- /dev/null +++ b/tests/spec/glsl-1.30/execution/fs-texelFetch-2D.c @@ -0,0 +1,130 @@ +/* + * Copyright © 2011 Dave Airlie + * + * 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 fs-texelFetch-2D.c + * + * Tests the built-in function texelFetch() in the fragment shader. + * + * Creates a mipmapped 64x32 2D texture and draws a series of squares whose + * color contains a texel fetched from each quadrant of the rgbw texture. + */ +#include "piglit-util.h" + +int piglit_width = 90, piglit_height = 150; +int piglit_window_mode = GLUT_RGBA | GLUT_DOUBLE; + +const int tex_size = 64; + +static int pos_location, lod_location; + +static const char vert[] = +"#version 130\n" +"void main()\n" +"{\n" +" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" +"}\n"; + +static const char frag[] = +"#version 130\n" +"uniform ivec2 pos;\n" +"uniform int lod;\n" +"uniform sampler2D tex;\n" +"void main()\n" +"{\n" +" vec4 texel = texelFetch(tex, pos, lod);\n" +" gl_FragColor = texel;\n" +"}\n"; + +static inline float max(float x, float y) { return (x > y) ? x : y; } + +enum piglit_result +piglit_display(void) +{ + int l, q; + bool pass = true; + float red[4] = {1.0, 0.0, 0.0, 1.0}; + float green[4] = {0.0, 1.0, 0.0, 1.0}; + float blue[4] = {0.0, 0.0, 1.0, 1.0}; + float white[4] = {1.0, 1.0, 1.0, 1.0}; + + glClearColor(0.5, 0.5, 0.5, 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + for (l = 0; (tex_size >> l) > 0; l++) { + const int width = tex_size >> l; + const int height = max(width / 2, 1); + const int y = 10 + 20 * l; + + piglit_Uniform1i(lod_location, l); + + /* Draw 4 squares with a color sample for each quad */ + for (q = 0; q < 4; q++) { + const int tex_x = (q / 2) * ((width / 2)); + const int tex_y = (q % 2) * ((height / 2)); + float *c; + const int x = 10+20*q; + + if (q == 0) c = red; + else if (q == 1) c = blue; + else if (q == 2) c = green; + else if (q == 3) c = white; + + piglit_Uniform2i(pos_location, tex_x, tex_y); + piglit_draw_rect(x, y, 10, 10); + + if (width > 2) /* below 1 wide no test */ + pass &= piglit_probe_rect_rgba(x, y, 10, 10, c); + } + } + + glutSwapBuffers(); + + return pass ? PIGLIT_PASS : PIGLIT_FAIL; +} + +void +piglit_init(int argc, char **argv) +{ + int vs, fs, prog; + int tex_location; + + piglit_require_GLSL_version(130); + + glActiveTexture(GL_TEXTURE0); + piglit_rgbw_texture(GL_RGBA, tex_size, tex_size / 2, true, false, + GL_UNSIGNED_NORMALIZED); + + piglit_ortho_projection(piglit_width, piglit_height, false); + + vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vert); + fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag); + prog = piglit_link_simple_program(vs, fs); + + tex_location = piglit_GetUniformLocation(prog, "tex"); + lod_location = piglit_GetUniformLocation(prog, "lod"); + pos_location = piglit_GetUniformLocation(prog, "pos"); + + piglit_UseProgram(prog); + piglit_Uniform1i(tex_location, 0); +} |