Attachment 32646 Details for Bug 25994 – shader.c

shader.c

shader.c (text/plain), 1.48 KB, created by Constantin Baranov on 2010-01-14 14:04:33 UTC

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Creator: Constantin Baranov

Created: 2010-01-14 14:04:33 UTC

Size: 1.48 KB

patch

obsolete

>#define GL_GLEXT_PROTOTYPES
>#include <GL/glut.h>
>
>#if 1
>
>static const GLchar *source[] = {
>	"void main() {\n",
>	"  gl_Position = ftransform();\n",
>	"  if (gl_Vertex.xy == vec2(-1, -1)) {\n",
>	"    gl_FrontColor.rgb = vec3(0, 0, 1);\n",
>	"  } else {\n",
>	"    gl_FrontColor.rg = (gl_Vertex.xy + vec2(1, 1)) * 0.5;\n",
>	"  }\n",
>	"}\n",
>};
>
>#else
>
>static const GLchar *source[] = {
>	"void main() {\n",
>	"  gl_Position = ftransform();\n",
>	"  if (gl_Vertex.xy == vec2(-1, -1)) {\n",
>	"    gl_FrontColor.rgb = vec3(0, 0, 1);\n",
>	"    return;\n",
>	"  }\n",
>	"  gl_FrontColor.rg = (gl_Vertex.xy + vec2(1, 1)) * 0.5;\n",
>	"}\n",
>};
>
>#endif
>
>static void display(void){
>	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>	glLoadIdentity();
>	glBegin(GL_QUADS);
>	glVertex2f(-1, -1);
>	glVertex2f(-1, 1);
>	glVertex2f(1, 1);
>	glVertex2f(1, -1);
>	glEnd();
>	glFinish();
>}
>
>static void reshape(int width, int height){
>	glViewport(0, 0, width, height);
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	glMatrixMode(GL_MODELVIEW);
>}
>
>int main(int argc, char **argv){
>	GLuint shader, program;
>
>	glutInit(&argc, argv);
>	glutInitDisplayMode(GLUT_RGB);
>
>	glutCreateWindow(argv[0]);
>	glutDisplayFunc(display);
>	glutReshapeFunc(reshape);
>
>	shader = glCreateShader(GL_VERTEX_SHADER);
>	glShaderSource(shader, sizeof(source) / sizeof(source[0]),
>		       source, NULL);
>	glCompileShader(shader);
>
>	program = glCreateProgram();
>	glAttachShader(program, shader);
>	glLinkProgram(program);
>	glUseProgram(program);
>
>	glutMainLoop();
>	return 0;
>}

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Attachments on bug 25994: 32573 | 32574 | 32575 | 32576 | 32577 | 32646 | 32915

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