void
setup_glsl_programs()
{
GLuint vs;
GLuint fs;
GLuint prog;
char vert[4096];
char frag[4096];
char *version_directive;
if (use_glsl_130) {
version_directive = "#version 130";
} else {
version_directive = "";
}
sprintf(vert,
"%s\n"
"uniform float position_angle;\n"
"uniform float clipVertex_angle;\n"
"mat4 rotate(float angle)\n"
"{\n"
" angle = radians(angle);\n"
" return mat4( cos(angle), sin(angle), 0.0, 0.0,\n"
" -sin(angle), cos(angle), 0.0, 0.0,\n"
" 0.0, 0.0, 1.0, 0.0,\n"
" 0.0, 0.0, 0.0, 1.0);\n"
"}\n"
"void main()\n"
"{\n"
"%s\n"
"}",
version_directive, setters);
sprintf(frag,
"%s\n"
"void main()\n"
"{\n"
" gl_FragColor = vec4(1.0);\n"
"}",
version_directive);
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vert);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag);
prog = piglit_CreateProgram();
piglit_AttachShader(prog, vs);
piglit_AttachShader(prog, fs);
piglit_LinkProgram(prog);
piglit_DeleteShader(vs);
piglit_DeleteShader(fs);
piglit_UseProgram(prog);
position_angle_loc = piglit_GetUniformLocation(prog, "position_angle");
if (use_clip_vertex) {
clipVertex_angle_loc =
piglit_GetUniformLocation(prog, "clipVertex_angle");
}
}
enum piglit_result
piglit_display(void)
{
GLuint vs, fs;
bool pass = true;
GLuint prog;
float green[] = {0.0, 1.0, 0.0, 0.0};
GLint status;
/* Initial buffer clear. */
glClearColor(1.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
prog = piglit_link_simple_program(vs, fs);
if (!vs || !fs || !prog)
piglit_report_result(PIGLIT_FAIL);
piglit_DeleteShader(vs);
piglit_DeleteShader(fs);
piglit_UseProgram(prog);
piglit_DeleteProgram(prog);
/* Try to blow out the refcount */
piglit_DeleteProgram(prog);
piglit_DeleteProgram(prog);
piglit_DeleteProgram(prog);
/* Sanity check: deleting didn't already unbind our shader program. */
piglit_draw_rect(-1, -1, 2, 2);
pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
green) && pass;
/* The program should still report being deleted. */
piglit_GetProgramiv(prog, GL_DELETE_STATUS, &status);
if (!piglit_check_gl_error(0))
piglit_report_result(PIGLIT_FAIL);
if (status != GL_TRUE) {
fprintf(stderr,
"GL_DELETE_STATUS after a clear reported non-true %d\n",
status);
pass = false;
}
/* Now, disable the program and it should be finally deleted. */
piglit_UseProgram(0);
piglit_GetProgramiv(prog, GL_DELETE_STATUS, &status);
pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLuint vs;
GLuint fs;
piglit_require_GLSL();
piglit_require_GLSL_version(130);
vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vert);
fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, frag);
prog = piglit_CreateProgram();
piglit_AttachShader(prog, vs);
piglit_AttachShader(prog, fs);
piglit_LinkProgram(prog);
piglit_DeleteShader(vs);
piglit_DeleteShader(fs);
piglit_UseProgram(prog);
}
/**
* Test drawing with GLSL shaders and no vertex arrays.
* Use a vertex shader with a hard-coded vertex position.
*/
static GLboolean
test_glsl_no_arrays(void)
{
static const char *noVertexVertShaderText =
"varying vec4 colorVar; \n"
"void main() \n"
"{ \n"
" colorVar = vec4(1.0, 1.0, 0.0, 1.0); \n"
" gl_Position = vec4(0.0, 0.0, 0.0, 1.0); \n"
"} \n";
static const char *fragShaderText =
"varying vec4 colorVar; \n"
"void main() \n"
"{ \n"
" gl_FragColor = colorVar; \n"
"} \n";
static const GLfloat expected[4] = {1.0, 1.0, 0.0, 1.0};
GLboolean p, pass = GL_TRUE;
GLuint vertShader, fragShader, program;
vertShader = piglit_compile_shader_text(GL_VERTEX_SHADER,
noVertexVertShaderText);
fragShader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fragShaderText);
program = piglit_link_simple_program(vertShader, fragShader);
piglit_UseProgram(program);
glClear(GL_COLOR_BUFFER_BIT);
glPointSize(3.0);
glDrawArrays(GL_POINTS, 0, 1);
glPointSize(1.0);
p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected);
glutSwapBuffers();
if (!p) {
printf("%s: failed when drawing with GLSL and no vertex arrays\n",
TestName);
pass = GL_FALSE;
}
piglit_DeleteShader(vertShader);
piglit_DeleteProgram(program);
return pass;
}
/** Test drawing with GLSL shaders */
static GLboolean
test_glsl_arrays(void)
{
static const char *vertShaderText =
"attribute vec4 color, pos; \n"
"varying vec4 colorVar; \n"
"void main() \n"
"{ \n"
" colorVar = color; \n"
" gl_Position = gl_ModelViewProjectionMatrix * pos; \n"
"} \n";
static const char *fragShaderText =
"varying vec4 colorVar; \n"
"void main() \n"
"{ \n"
" gl_FragColor = colorVar; \n"
"} \n";
static const GLfloat expected[4] = {0.5, 0.0, 0.5, 1.0};
GLuint buf;
GLboolean p, pass = GL_TRUE;
GLint posAttrib, colorAttrib;
GLuint vertShader, fragShader, program;
buf = setup_vbo();
glBindBufferARB(GL_ARRAY_BUFFER_ARB, buf);
vertShader = piglit_compile_shader_text(GL_VERTEX_SHADER, vertShaderText);
fragShader = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fragShaderText);
program = piglit_link_simple_program(vertShader, fragShader);
piglit_UseProgram(program);
/*
* Draw with compiler-assigned attribute locations
*/
{
posAttrib = piglit_GetAttribLocation(program, "pos");
colorAttrib = piglit_GetAttribLocation(program, "color");
if (0)
printf("%s: GLSL posAttrib = %d colorAttrib = %d\n",
TestName, posAttrib, colorAttrib);
glVertexAttribPointerARB(posAttrib, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(GLfloat), (void *) 0);
glVertexAttribPointerARB(colorAttrib, 3, GL_FLOAT, GL_FALSE,
3 * sizeof(GLfloat),
(void *) (8 * sizeof(GLfloat)));
glEnableVertexAttribArrayARB(posAttrib);
glEnableVertexAttribArrayARB(colorAttrib);
glClear(GL_COLOR_BUFFER_BIT);
glDrawArrays(GL_QUADS, 0, 4);
p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected);
glutSwapBuffers();
if (!p) {
printf("%s: failed when drawing with ", TestName);
printf("compiler-assigned attribute locations\n");
pass = GL_FALSE;
}
glDisableVertexAttribArrayARB(posAttrib);
glDisableVertexAttribArrayARB(colorAttrib);
}
/*
* Draw with user-defined attribute bindings, not using 0.
*/
{
posAttrib = 5;
colorAttrib = 7;
piglit_BindAttribLocation(program, posAttrib, "pos");
piglit_BindAttribLocation(program, colorAttrib, "color");
piglit_LinkProgram(program);
glVertexAttribPointerARB(posAttrib, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(GLfloat), (void *) 0);
glVertexAttribPointerARB(colorAttrib, 3, GL_FLOAT, GL_FALSE,
3 * sizeof(GLfloat),
(void *) (8 * sizeof(GLfloat)));
glEnableVertexAttribArrayARB(posAttrib);
glEnableVertexAttribArrayARB(colorAttrib);
glClear(GL_COLOR_BUFFER_BIT);
glDrawArrays(GL_QUADS, 0, 4);
p = piglit_probe_pixel_rgba(piglit_width/2, piglit_height/2, expected);
glutSwapBuffers();
if (!p) {
printf("%s: failed when drawing with ", TestName);
printf("user-assigned attribute locations\n");
pass = GL_FALSE;
}
glDisableVertexAttribArrayARB(posAttrib);
glDisableVertexAttribArrayARB(colorAttrib);
}
piglit_DeleteShader(vertShader);
piglit_DeleteProgram(program);
glDeleteBuffersARB(1, &buf);
return pass;
}
