Attachment 142768 Details for Bug 108999 – piglit test that triggers SCISSOR bbox clamping errors when the y is flipped (0 on top)

piglit test that triggers SCISSOR bbox clamping errors when the y is flipped (0 on top)

vp-bug.c (text/x-csrc), 2.42 KB, created by Eleni Maria Stea on 2018-12-10 10:13:55 UTC

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Filename:

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Creator: Eleni Maria Stea

Created: 2018-12-10 10:13:55 UTC

Size: 2.42 KB

patch

obsolete

>#include "piglit-util-gl.h"
>
>int win_width = 800;
>int win_height = 600;
>
>PIGLIT_GL_TEST_CONFIG_BEGIN
>
>	config.supports_gl_compat_version = 32;
>
>	config.window_width = win_width;
>	config.window_height = win_height;
>	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB;
>	config.khr_no_error_support = PIGLIT_NO_ERRORS;
>
>PIGLIT_GL_TEST_CONFIG_END
>
>static int piglit_error;
>static unsigned int vao, vbo;
>static unsigned int sdrprog;
>static const float varr[] = {-1, -1, 1, -1, 1, 1,  -1, -1, 1, 1, -1, 1 };
>
>static const char *vsdr_src =
>	"attribute vec4 vertex;\n"
>	"void main()\n"
>	"{\n"
>	"gl_Position = vertex;\n"
>	"}\n";
>
>static const char *fsdr_src =
>	"void main()\n"
>	"{\n"
>	"gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
>	"}\n";
>
>void
>piglit_init(int argc, char **argv)
>{
>	unsigned int vsdr, fsdr;
>	int status;
>
>	glGenBuffers(1, &vbo);
>	glBindBuffer(GL_ARRAY_BUFFER, vbo);
>	glBufferData(GL_ARRAY_BUFFER, sizeof varr, varr, GL_STATIC_DRAW);
>
>	glGenVertexArrays(1, &vao);
>	glBindVertexArray(vao);
>	glEnableVertexAttribArray(0);
>	glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
>	glBindBuffer(GL_ARRAY_BUFFER, 0);
>	glBindVertexArray(0);
>
>	/* create shaders */
>
>	vsdr = glCreateShader(GL_VERTEX_SHADER);
>	glShaderSource(vsdr, 1, &vsdr_src, 0);
>	glCompileShader(vsdr);
>	glGetShaderiv(vsdr, GL_COMPILE_STATUS, &status);
>	if(!status) {
>		fprintf(stderr, "failed to compile vertex shader\n");
>		piglit_error = 1;
>		return;
>	}
>	fsdr = glCreateShader(GL_FRAGMENT_SHADER);
>	glShaderSource(fsdr, 1, &fsdr_src, 0);
>	glCompileShader(fsdr);
>	glGetShaderiv(fsdr, GL_COMPILE_STATUS, &status);
>	if(!status) {
>		fprintf(stderr, "failed to compile pixel shader\n");
>		piglit_error = 1;
>		return;
>	}
>
>	sdrprog = glCreateProgram();
>	glAttachShader(sdrprog, vsdr);
>	glAttachShader(sdrprog, fsdr);
>
>	glBindAttribLocation(sdrprog, 0, "vertex");
>	glLinkProgram(sdrprog);
>
>	glGetProgramiv(sdrprog, GL_LINK_STATUS, &status);
>	if(!status) {
>		fprintf(stderr, "failed to link program\n");
>		piglit_error = 1;
>		return;
>	}
>
>	glUseProgram(sdrprog);
>
>	if (glGetError() != GL_NO_ERROR)
>		piglit_error = 1;
>}
>
>enum piglit_result
>piglit_display(void)
>{
>	if (piglit_error)
>		return PIGLIT_FAIL;
>
>	glBindVertexArray(vao);
>
>	glViewport(2, 602, 262, 296);
>
>	glDrawArrays(GL_TRIANGLES, 0, 6);
>
>	glViewport(0, 0, 800, 600);
>
>	glDrawArrays(GL_TRIANGLES, 0, 6);
>
>	glBindVertexArray(0);
>
>	if (glGetError() != GL_NO_ERROR)
>		return PIGLIT_FAIL;
>
>	piglit_swap_buffers();
>
>	return PIGLIT_PASS;
>}

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Attachments on bug 108999: 142768

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