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/*
* Copyright © 2014 Intel Corporation
*
* 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 active-sampler-conflict.c
* Verify results of program pipeline validation when a conflicting sampler
* configuration is used.
*
* Section 2.11.11 (Shader Execution), subheading "Validation," of the OpenGL
* 4.1 spec says:
*
* "[INVALID_OPERATION] is generated by any command that transfers
* vertices to the GL if:
*
* ...
*
* - Any two active samplers in the current program object are of
* different types, but refer to the same texture image unit."
*
* This test verifies this behavior several ways. First, an invalid
* configuration is constructed. When the pipeline is in the invalid
* configuration, glValidateProgramPipeline is used to determine the status.
*
* The pipeline is then transitioned to a valid configuration, and
* glValidateProgramPipeline is called again.
*
* The pipeline is then transitioned back to the invalid configuration.
* Without calling glValidateProgramPipeline, glDrawArrays is called. This
* should generate the aforementioned error. While still in the invalid state
* glValidateProgramPipeline is called a third time.
*
* Finally, the pipeline is transitioned back to the valid configuration.
* Without calling glValidateProgramPipeline, glDrawArrays is called. This
* should not generate any error.
*
* All of the state flip-flopping is done in an attempt to catch
* implementations that latch state in glValidateProgramPipeline and do not
* re-validate in glDrawArrays.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 30;
config.supports_gl_core_version = 31;
PIGLIT_GL_TEST_CONFIG_END
static const char *fs_code =
"#version 130\n"
"#extension GL_ARB_separate_shader_objects: require\n"
"\n"
"out vec4 out_color;\n"
"\n"
"uniform sampler2D s2;\n"
"uniform sampler3D s3;\n"
"\n"
"void main()\n"
"{\n"
" out_color = texture(s2, vec2(0)) + texture(s3, vec3(0));\n"
"}\n"
;
static const float vert[2] = {
0.0, 0.0
};
void piglit_init(int argc, char **argv)
{
GLuint prog;
GLint s2_loc;
GLint s3_loc;
GLuint pipe;
GLuint vao;
GLuint bo;
bool pass = true;
piglit_require_extension("GL_ARB_separate_shader_objects");
prog = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1,
(const GLchar *const *) &fs_code);
piglit_link_check_status(prog);
s2_loc = glGetUniformLocation(prog, "s2");
if (s2_loc == -1) {
fprintf(stderr, "Failed to get uniform location for s2.\n");
pass = false;
}
s3_loc = glGetUniformLocation(prog, "s3");
if (s3_loc == -1) {
fprintf(stderr, "Failed to get uniform location for s3.\n");
pass = false;
}
glGenProgramPipelines(1, &pipe);
glUseProgramStages(pipe,
GL_FRAGMENT_SHADER_BIT,
prog);
glActiveShaderProgram(pipe, prog);
glBindProgramPipeline(pipe);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
/* Configure a vertex array object and buffer object that will
* be used for drawing later.
*/
glGenBuffers(1, &bo);
glBindBuffer(GL_ARRAY_BUFFER, bo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vert), vert, GL_STATIC_DRAW);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* First, try an invalid configuration.
*/
glUniform1i(s2_loc, 1);
glUniform1i(s3_loc, 1);
if (piglit_program_pipeline_check_status_quiet(pipe)) {
fprintf(stderr,
"Pipeline was validated with conflicting "
"sampler configuration.\n");
pass = false;
}
/* Now try a valid configuration.
*/
glUniform1i(s2_loc, 1);
glUniform1i(s3_loc, 2);
if (!piglit_program_pipeline_check_status_quiet(pipe)) {
fprintf(stderr,
"Pipeline was not validated with non-conflicting "
"sampler configuration.\n");
pass = false;
}
/* Switch back to the invalid configuration. Without first calling
* glValidateProgramPipeline, try to draw something. Verify that
* GL_INVALID_OPERATION is generated.
*/
glUniform1i(s2_loc, 1);
glUniform1i(s3_loc, 1);
glDrawArrays(GL_POINTS, 0, 1);
pass = piglit_check_gl_error(GL_INVALID_OPERATION) && pass;
/* Re-validate the program.
*/
if (piglit_program_pipeline_check_status_quiet(pipe)) {
fprintf(stderr,
"Pipeline was validated with conflicting "
"sampler configuration (second attempt).\n");
pass = false;
}
/* Switch back to the valid configuration. Without first calling
* glValidateProgramPipeline, try to draw something. Verify that
* no error is generated.
*/
glUniform1i(s2_loc, 1);
glUniform1i(s3_loc, 2);
glDrawArrays(GL_POINTS, 0, 1);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* Clean up.
*/
glBindProgramPipeline(0);
glDeleteProgram(prog);
glDeleteProgramPipelines(1, &pipe);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
glDeleteBuffers(1, &bo);
glDeleteVertexArrays(1, &vao);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* Not reached */
return PIGLIT_FAIL;
}
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