Split ARB_shader_texture_lod tests into compiler/execution subgroups.

This makes it a bit easier to count how many parser tests vs. actual
drawing tests we have.  More importantly, the next commit will add a
bunch of execution tests that use .frag and .vert files which I don't
want picked up as parser tests, so I need them in different folders.

1 files changed, 185 insertions, 0 deletions

diff --git a/tests/spec/arb_shader_texture_lod/execution/texgrad.c b/tests/spec/arb_shader_texture_lod/execution/texgrad.c
new file mode 100644
index 000000000..a7bf6ecdb
--- /dev/null
+++ b/tests/spec/arb_shader_texture_lod/execution/texgrad.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright © 2009 Intel Corporation
+ * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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.
+ *
+ * Authors:
+ *    Marek Olšák <maraeo@gmail.com>
+ *
+ * Based on fbo-clearmipmap by:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include "piglit-util.h"
+
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+int piglit_width = 512;
+int piglit_height = 256;
+
+#define TEX_WIDTH 256
+#define TEX_HEIGHT 256
+
+static const float colors[][3] = {
+	{1.0, 0.0, 0.0},
+	{0.0, 1.0, 0.0},
+	{0.0, 0.0, 1.0},
+	{1.0, 1.0, 0.0},
+	{0.0, 1.0, 1.0},
+	{1.0, 0.0, 1.0},
+	{0.5, 0.0, 0.5},
+	{1.0, 1.0, 1.0},
+};
+
+static const char *sh_tex =
+	"uniform sampler2D tex;"
+	"void main()"
+	"{"
+	"   gl_FragColor = texture2D(tex, gl_TexCoord[0].xy);"
+	"}";
+
+static const char *sh_texgrad =
+	"#extension GL_ARB_shader_texture_lod : enable\n"
+	"uniform sampler2D tex;"
+	"void main()"
+	"{"
+	"   gl_FragColor = texture2DGradARB(tex, gl_TexCoord[0].xy,"
+	"                                   dFdx(gl_TexCoord[0].xy),"
+	"                                   dFdy(gl_TexCoord[0].xy));"
+	"}";
+
+static GLint prog_tex, prog_texgrad;
+
+void piglit_init(int argc, char **argv)
+{
+	GLuint tex, fb;
+	GLenum status;
+	int i, dim;
+	static GLuint fs_tex, fs_texgrad;
+
+	piglit_require_GLSL();
+	piglit_require_extension("GL_EXT_framebuffer_object");
+	piglit_require_extension("GL_ARB_shader_texture_lod");
+
+	fs_tex = piglit_compile_shader_text(GL_FRAGMENT_SHADER, sh_tex);
+	fs_texgrad = piglit_compile_shader_text(GL_FRAGMENT_SHADER, sh_texgrad);
+	prog_tex = piglit_link_simple_program(0, fs_tex);
+	prog_texgrad = piglit_link_simple_program(0, fs_texgrad);
+
+	glGenTextures(1, &tex);
+	glBindTexture(GL_TEXTURE_2D, tex);
+
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+	for (i = 0, dim = TEX_WIDTH; dim >0; i++, dim /= 2) {
+		glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA,
+			     dim, dim,
+			     0,
+			     GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+	}
+	assert(glGetError() == 0);
+
+	glBindTexture(GL_TEXTURE_2D, 0);
+	glDisable(GL_TEXTURE_2D);
+
+	glGenFramebuffersEXT(1, &fb);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
+
+	for (i = 0, dim = TEX_WIDTH; dim >0; i++, dim /= 2) {
+		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+					  GL_COLOR_ATTACHMENT0_EXT,
+					  GL_TEXTURE_2D,
+					  tex,
+					  i);
+
+		status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
+		if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+			fprintf(stderr, "FBO incomplete\n");
+			piglit_report_result(PIGLIT_SKIP);
+		}
+
+		glClearColor(colors[i][0],
+			     colors[i][1],
+			     colors[i][2],
+			     0.0);
+		glClear(GL_COLOR_BUFFER_BIT);
+
+		assert(glGetError() == 0);
+	}
+	glDeleteFramebuffersEXT(1, &fb);
+	glBindTexture(GL_TEXTURE_2D, tex);
+
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective(45, 1, 0.1, 1000);
+
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	glTranslatef(-0.5, -0.5, -1.2);
+	glRotatef(68, 0, 1, 0);
+	glScalef(2000, 1, 1);
+
+	glEnable(GL_TEXTURE_2D);
+	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+	piglit_set_tolerance_for_bits(7, 7, 7, 7);
+
+	printf("Left: texture2D, Right: texture2DGradARB\n");
+}
+
+static void draw_quad()
+{
+	glBegin(GL_QUADS);
+	glTexCoord2f(0, 0);
+	glVertex2f(0, 0);
+	glTexCoord2f(1, 0);
+	glVertex2f(1, 0);
+	glTexCoord2f(1, 1);
+	glVertex2f(1, 1);
+	glTexCoord2f(0, 1);
+	glVertex2f(0, 1);
+	glEnd();
+}
+
+enum piglit_result piglit_display(void)
+{
+	GLboolean pass = GL_TRUE;
+
+	glViewport(0, 0, piglit_width, piglit_height);
+	glClearColor(0.5, 0.5, 0.5, 0.5);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glViewport(0, 0, piglit_width/2, piglit_height);
+	piglit_UseProgram(prog_tex);
+	draw_quad();
+
+	glViewport(piglit_width/2, 0, piglit_width/2, piglit_height);
+	piglit_UseProgram(prog_texgrad);
+	draw_quad();
+
+	if (!piglit_probe_rect_halves_equal_rgba(0, 0, piglit_width, piglit_height))
+		pass = GL_FALSE;
+
+	glutSwapBuffers();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}