Attachment 143426 Details for Bug 102581 – Test program

Test program

test.c (text/x-csrc), 1.42 KB, created by Felix Potthast on 2019-02-20 23:04:52 UTC

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Creator: Felix Potthast

Created: 2019-02-20 23:04:52 UTC

Size: 1.42 KB

patch

obsolete

>#include <epoxy/gl.h>
>#include <GLFW/glfw3.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>
>#define RESOLUTION 32
>#define MIP_LEVELS 6
>
>#define COLORS 1
>#define FORMAT GL_RED
>
>int main(void)
>{
>	glfwInit();
>	GLFWwindow* window;
>	glfwWindowHint(GLFW_VISIBLE,0);
>	window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL);
>	glfwMakeContextCurrent(window);
>
>	GLuint texture;
>	glGenTextures(1, &texture);
>
>	int width=RESOLUTION, height=RESOLUTION, depth=RESOLUTION;
>	unsigned char* written_buffer[MIP_LEVELS];
>	unsigned char* read_buffer[MIP_LEVELS];
>
>	int mip_width=width;
>	int mip_height=height;
>	int mip_depth=depth;
>
>	glPixelStorei(GL_PACK_ALIGNMENT, 1);
>	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
>
>	for(int l=0;l<MIP_LEVELS;l++){
>		mip_width=width>>l;
>		mip_height=height>>l;
>		mip_depth=depth>>l;
>		written_buffer[l]=calloc(mip_width*mip_height*mip_depth*COLORS,8);
>		read_buffer[l]=calloc(mip_width*mip_height*mip_depth*COLORS,8);
>
>		for(int i=0;i<mip_width*mip_height*mip_depth*COLORS;i++){
>			written_buffer[l][i]=(i%2)*255;
>		}
>
>		glTexImage3D(GL_TEXTURE_3D, l, FORMAT, mip_width, mip_height, mip_depth, 0, FORMAT, GL_UNSIGNED_BYTE, written_buffer[l]);
>
>		glGetTexImage(GL_TEXTURE_3D, l, FORMAT, GL_UNSIGNED_BYTE, read_buffer[l]);
>
>		if(memcmp(read_buffer[l], written_buffer[l], mip_width*mip_height*mip_depth*COLORS)){
>			printf("Error in level %d\n",l);
>		}
>	}
>
>	glfwDestroyWindow(window);
>	glfwTerminate();
>	exit(EXIT_SUCCESS);
>}

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Attachments on bug 102581: 134041 | 134096 | 143426

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