[Piglit] [PATCH 7/8] arb_texture_multisample: add test for texelFetch()
Chris Forbes
chrisf at ijw.co.nz
Sat Jan 5 01:07:38 PST 2013
Writes a test pattern to individual samples in a multisample texture,
and tests texelFetch() reads the correct values for each sample.
Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
tests/all.tests | 2 +
.../spec/arb_texture_multisample/CMakeLists.gl.txt | 1 +
.../texel-fetch-execution.c | 159 +++++++++++++++++++++
3 files changed, 162 insertions(+)
create mode 100644 tests/spec/arb_texture_multisample/texel-fetch-execution.c
diff --git a/tests/all.tests b/tests/all.tests
index 19d7cf9..8a56a27 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -850,6 +850,8 @@ add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-sample-mas
add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-sample-mask-value')
add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-sample-mask-execution')
add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-sample-mask-execution -tex')
+add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-texel-fetch-execution vs')
+add_concurrent_test(arb_texture_multisample, 'arb_texture_multisample-texel-fetch-execution fs')
textureSize_samplers_atm = ['sampler2DMS', 'isampler2DMS', 'usampler2DMS',
'sampler2DMSArray', 'isampler2DMSArray', 'usampler2DMSArray']
for stage in ['vs', 'fs']:
diff --git a/tests/spec/arb_texture_multisample/CMakeLists.gl.txt b/tests/spec/arb_texture_multisample/CMakeLists.gl.txt
index f13b062..7bc915f 100644
--- a/tests/spec/arb_texture_multisample/CMakeLists.gl.txt
+++ b/tests/spec/arb_texture_multisample/CMakeLists.gl.txt
@@ -16,5 +16,6 @@ piglit_add_executable (arb_texture_multisample-texstate texstate.c)
piglit_add_executable (arb_texture_multisample-sample-mask sample-mask.c)
piglit_add_executable (arb_texture_multisample-sample-mask-value sample-mask-value.c)
piglit_add_executable (arb_texture_multisample-sample-mask-execution sample-mask-execution.c)
+piglit_add_executable (arb_texture_multisample-texel-fetch-execution texel-fetch-execution.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_texture_multisample/texel-fetch-execution.c b/tests/spec/arb_texture_multisample/texel-fetch-execution.c
new file mode 100644
index 0000000..791643f
--- /dev/null
+++ b/tests/spec/arb_texture_multisample/texel-fetch-execution.c
@@ -0,0 +1,159 @@
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 30;
+
+ config.window_width = 64;
+ config.window_height = 64;
+ config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+/* test texelFetch() from multisample textures.
+ * instead of using actual multisample rasterization,
+ * we'll write the test pattern to a MSAA texture via
+ * sample masking.
+ */
+
+GLuint fbo, tex, shader, prog;
+GLint u_sample;
+GLuint shader_stage = 0;
+
+enum piglit_result
+piglit_display(void)
+{
+ float red[] = {1,0,0,1};
+ float green[] = {0,1,0,1};
+ float blue[] = {0,0,1,1};
+ float white[] = {1,1,1,1};
+
+ bool pass = true;
+
+ glClearColor(0.2,0.2,0.2,1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glUseProgram(prog);
+
+ glUniform1i(u_sample, 0);
+ piglit_draw_rect(-1,-1,1,1);
+
+ glUniform1i(u_sample, 1);
+ piglit_draw_rect(0,-1,1,1);
+
+ glUniform1i(u_sample, 2);
+ piglit_draw_rect(0,0,1,1);
+
+ glUniform1i(u_sample, 3);
+ piglit_draw_rect(-1,0,1,1);
+
+ pass = piglit_probe_pixel_rgba(16, 16, red) && pass;
+ pass = piglit_probe_pixel_rgba(48, 16, green) && pass;
+ pass = piglit_probe_pixel_rgba(48, 48, blue) && pass;
+ pass = piglit_probe_pixel_rgba(16, 48, white) && pass;
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ piglit_require_extension("GL_ARB_texture_multisample");
+
+ while (++argv,--argc) {
+ if (!strcmp(*argv, "vs"))
+ shader_stage = GL_VERTEX_SHADER;
+ else if (!strcmp(*argv, "fs"))
+ shader_stage = GL_FRAGMENT_SHADER;
+ }
+
+
+ glGenFramebuffers(1, &fbo);
+ glGenTextures(1, &tex);
+ glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, tex);
+ glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE,
+ 4, GL_RGBA, 64, 64, GL_TRUE);
+
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+ GL_TEXTURE_2D_MULTISAMPLE, tex, 0);
+
+ glClearColor(0.2,0.2,0.2,1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* write test pattern: red,green,blue,white */
+ glEnable(GL_SAMPLE_MASK);
+
+ glSampleMaski(0, (1<<0));
+ glColor4f(1.0,0.0,0.0,1.0);
+ piglit_draw_rect(-1,-1,2,2);
+
+ glSampleMaski(0, (1<<1));
+ glColor4f(0.0,1.0,0.0,1.0);
+ piglit_draw_rect(-1,-1,2,2);
+
+ glSampleMaski(0, (1<<2));
+ glColor4f(0.0,0.0,1.0,1.0);
+ piglit_draw_rect(-1,-1,2,2);
+
+ glSampleMaski(0, (1<<3));
+ glColor4f(1.0,1.0,1.0,1.0);
+ piglit_draw_rect(-1,-1,2,2);
+
+ glDisable(GL_SAMPLE_MASK);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ switch (shader_stage) {
+ case GL_VERTEX_SHADER:
+ shader = piglit_compile_shader_text(GL_VERTEX_SHADER,
+ "#version 130\n"
+ "#extension GL_ARB_texture_multisample : require\n"
+ "\n"
+ "uniform sampler2DMS s;\n"
+ "uniform int sample;\n"
+ "\n"
+ "void main() {\n"
+ " gl_Position = ftransform();\n"
+ " gl_FrontColor = texelFetch(s, ivec2(32, 32), sample); \n"
+ "}\n");
+
+ prog = piglit_link_simple_program(shader, 0);
+ break;
+
+ case GL_FRAGMENT_SHADER:
+ shader = piglit_compile_shader_text(GL_FRAGMENT_SHADER,
+ "#version 130\n"
+ "#extension GL_ARB_texture_multisample : require\n"
+ "\n"
+ "uniform sampler2DMS s;\n"
+ "uniform int sample;\n"
+ "\n"
+ "void main() {\n"
+ " gl_FragColor = texelFetch(s, ivec2(32,32), sample); \n"
+ "}\n");
+
+ prog = piglit_link_simple_program(0, shader);
+ break;
+
+ default:
+ printf("Please provide shader type: `vs` or `fs`\n");
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ if (!prog || !shader)
+ piglit_report_result(PIGLIT_FAIL);
+
+ u_sample = glGetUniformLocation(prog, "sample");
+ printf("sample uniform: %d\n", u_sample);
+ if (u_sample == -1)
+ piglit_report_result(PIGLIT_FAIL);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+}
--
1.8.1
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