fbo-mrt-alphatest: Actually require MRTs to be available.

[piglit.git] / tests / spec / arb_direct_state_access / texture-storage.c

/*
 * Copyright (c) 2011 VMware, Inc.
 * Copyright (c) 2014 Intel Corporation
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, 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
 * NON-INFRINGEMENT.  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.
 */

/**
 * Note: only the glTextureStorage2D() function is tested with actual 
 * rendering.
 */

#include "piglit-util-gl.h"
#include "dsa-utils.h"

PIGLIT_GL_TEST_CONFIG_BEGIN

        config.supports_gl_core_version = 31;
        config.supports_gl_compat_version = 20;

        config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
        config.khr_no_error_support = PIGLIT_NO_ERRORS;

PIGLIT_GL_TEST_CONFIG_END

static const char *TestName = "texture-storage";

static GLubyte Colors[][4] = {
        {255,   0,      0, 255},
        {  0, 255,      0, 255},
        {  0,   0, 255, 255},
        {  0, 255, 255, 255},
        {255,   0, 255, 255},
        {255, 255,      0, 255},
        {255, 255, 255, 255},
        {128,   0,      0, 255},
        {  0, 128,      0, 255},
        {  0,   0, 128, 255}
};


/**
 * Do error-check tests for a non-mipmapped texture.
 */
static bool
test_one_level_errors(GLenum target)
{
        const GLint width = 64, height = 4, depth = 8;
        GLuint tex;
        GLint v;

        assert(target == GL_TEXTURE_1D ||
               target == GL_TEXTURE_2D ||
               target == GL_TEXTURE_3D);

        glCreateTextures(target, 1, &tex);
        glBindTextureUnit(0, tex);

        if (target == GL_TEXTURE_1D) {
                glTextureStorage1D(tex, 1, GL_RGBA8, width);
        } else if (target == GL_TEXTURE_2D) {
                glTextureStorage2D(tex, 1, GL_RGBA8, width, height);
        } else if (target == GL_TEXTURE_3D) {
                glTextureStorage3D(tex, 1, GL_RGBA8, width, height, depth);
        }

        piglit_check_gl_error(GL_NO_ERROR);

        glGetTextureLevelParameteriv(tex, 0, GL_TEXTURE_WIDTH, &v);
        if (v != width) {
                printf("%s: bad width: %d, should be %d\n", TestName, v, width);
                return false;
        }

        if (target != GL_TEXTURE_1D) {
                glGetTextureLevelParameteriv(tex, 0, GL_TEXTURE_HEIGHT, &v);
                if (v != height) {
                        printf("%s: bad height: %d, should be %d\n", TestName,
                               v, height);
                        return false;
                }
        }

        if (target == GL_TEXTURE_3D) {
                glGetTextureLevelParameteriv(tex, 0, GL_TEXTURE_DEPTH, &v);
                if (v != depth) {
                        printf("%s: bad depth: %d, should be %d\n", TestName,
                               v, depth);
                        return false;
                }
        }

        /* The ARB_texture_storage spec says:
         *
         *     "Using any of the following commands with the same texture will
         *     result in the error INVALID_OPERATION being generated, even if
         *     it does not affect the dimensions or format:
         *
         *         - TexImage*
         *         - CompressedTexImage*
         *         - CopyTexImage*
         *         - TexStorage*"
         */
        if (!piglit_khr_no_error && target == GL_TEXTURE_2D) {
                glTexImage2D(target, 0, GL_RGBA, width, height, 0,
                             GL_RGBA, GL_UNSIGNED_BYTE, NULL);
                if (glGetError() != GL_INVALID_OPERATION) {
                        printf("%s: glTexImage2D failed to generate error\n",
                               TestName);
                        return false;
                }

                glTextureStorage2D(tex, 1, GL_RGBA8, width, height);
                if (glGetError() != GL_INVALID_OPERATION) {
                        printf("%s: glTextureStorage2D() failed to generate "
                               "error\n", TestName);
                        return false;
                }

                glCopyTexImage2D(target, 0, GL_RGBA, 0, 0, width, height, 0);
                if (glGetError() != GL_INVALID_OPERATION) {
                        printf("%s: glCopyTexImage2D() failed to generate "
                               "error\n", TestName);
                        return false;
                }
        }

        glDeleteTextures(1, &tex);

        return true;
}


/**
 * Do error-check tests for a mipmapped texture.
 */
static bool
test_mipmap_errors(GLenum target)
{
        GLint width = 128, height = 64, depth = 4, levels = 8;
        const char *targetString = piglit_get_gl_enum_name(target);
        GLuint tex;
        GLint v, l;

        assert(target == GL_TEXTURE_1D ||
               target == GL_TEXTURE_2D ||
               target == GL_TEXTURE_3D);

        glCreateTextures(target, 1, &tex);
        glBindTextureUnit(0, tex);

        if (target == GL_TEXTURE_1D) {
                glTextureStorage1D(tex, levels, GL_RGBA8, width);
        } else if (target == GL_TEXTURE_2D) {
                glTextureStorage2D(tex, levels, GL_RGBA8, width, height);
        } else if (target == GL_TEXTURE_3D) {
                glTextureStorage3D(tex, levels, GL_RGBA8, width, 
                        height, depth);
        }

        piglit_check_gl_error(GL_NO_ERROR);

        glGetTextureParameteriv(tex, GL_TEXTURE_IMMUTABLE_FORMAT, &v);
        if (!v) {
                printf("%s: %s GL_TEXTURE_IMMUTABLE_FORMAT query returned "
                       "false\n",
                       TestName, targetString);
                return false;
        }

        for (l = 0; l < levels; l++) {
                glGetTextureLevelParameteriv(tex, l, GL_TEXTURE_WIDTH, &v);
                if (v != width) {
                        printf("%s: %s level %d: bad width: %d, should be %d\n",
                               TestName, targetString, l, v, width);
                        return false;
                }

                if (target != GL_TEXTURE_1D) {
                        glGetTextureLevelParameteriv(tex, l, 
                                                     GL_TEXTURE_HEIGHT, &v);
                        if (v != height) {
                                printf("%s: %s level %d: bad height: %d, "
                                       "should be %d\n",
                                       TestName, targetString, l, v, height);
                                return false;
                        }
                }

                if (target == GL_TEXTURE_3D) {
                        glGetTextureLevelParameteriv(tex, l, 
                                                     GL_TEXTURE_DEPTH, &v);
                        if (v != depth) {
                                printf("%s: %s level %d: bad depth: %d, "
                                       "should be %d\n",
                                       TestName, targetString, l, v, depth);
                                return false;
                        }
                }

                if (width > 1)
                        width /= 2;
                if (height > 1)
                        height /= 2;
                if (depth > 1)
                        depth /= 2;
        }

        glDeleteTextures(1, &tex);

        return true;
}


static bool
test_cube_texture(void)
{
        const GLint width = 16, height = 16;
        const GLenum target = GL_TEXTURE_CUBE_MAP;
        GLuint tex;
        bool pass = true;

        /* Test valid cube dimensions */
        glCreateTextures(target, 1, &tex);
        glBindTextureUnit(0, tex);
        glTextureStorage2D(tex, 1, GL_RGBA8, width, height);
        pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
        glDeleteTextures(1, &tex);

        /* Test invalid cube dimensions */
        if (!piglit_khr_no_error) {
                glCreateTextures(target, 1, &tex);
                glBindTextureUnit(0, tex);
                glTextureStorage2D(tex, 1, GL_RGBA8, width, height+2);
                pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
                glDeleteTextures(1, &tex);
        }

        return pass;
}


static bool
test_cube_array_texture(void)
{
        const GLint width = 16, height = 16;
        const GLenum target = GL_TEXTURE_CUBE_MAP_ARRAY;
        GLuint tex;
        bool pass = true;

        /* Test valid cube array dimensions */
        glCreateTextures(target, 1, &tex);
        glBindTextureUnit(0, tex);
        glTextureStorage3D(tex, 1, GL_RGBA8, width, height, 12);
        pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
        glDeleteTextures(1, &tex);

        if (!piglit_khr_no_error) {
                /* Test invalid cube array width, height dimensions */
                glCreateTextures(target, 1, &tex);
                glBindTextureUnit(0, tex);
                glTextureStorage3D(tex, 1, GL_RGBA8, width, height+3, 12);
                pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
                glDeleteTextures(1, &tex);

                /* Test invalid cube array depth */
                glCreateTextures(target, 1, &tex);
                glBindTextureUnit(0, tex);
                glTextureStorage3D(tex, 1, GL_RGBA8, width, height, 12+2);
                pass = piglit_check_gl_error(GL_INVALID_VALUE) && pass;
                glDeleteTextures(1, &tex);
        }

        return pass;
}


/**
 * Create a single-color image.
 */
static GLubyte *
create_image(GLint w, GLint h, const GLubyte color[4])
{
        GLubyte *buf = (GLubyte *) malloc(w * h * 4);
        int i;
        for (i = 0; i < w * h; i++) {
                buf[i*4+0] = color[0];
                buf[i*4+1] = color[1];
                buf[i*4+2] = color[2];
                buf[i*4+3] = color[3];
        }
        return buf;
}


/**
 * Test a mip-mapped texture w/ rendering.
 */
static bool
test_2d_mipmap_rendering(void)
{
        GLuint tex;
        GLint width = 128, height = 64, levels = 8;
        GLint v, l;
        GLfloat vfloat;
        GLuint prog;

        glCreateTextures(GL_TEXTURE_2D, 1, &tex);
        glBindTextureUnit(0, tex);

        glTextureStorage2D(tex, levels, GL_RGBA8, width, height);

        piglit_check_gl_error(GL_NO_ERROR);

        /* check that the mipmap level sizes are correct */
        for (l = 0; l < levels; l++) {
                GLubyte *buf = create_image(width, height, Colors[l]);

                glTextureSubImage2D(tex, l, 0, 0, width, height,
                                GL_RGBA, GL_UNSIGNED_BYTE, buf);

                free(buf);

                glGetTextureLevelParameteriv(tex, l, GL_TEXTURE_WIDTH,
                                             &v);
                if (v != width) {
                        printf("%s: level %d: bad width: %d, should be %d\n",
                                         TestName, l, v, width);
                        return false;
                }

                glGetTextureLevelParameteriv(tex, l, GL_TEXTURE_HEIGHT,
                                             &v);
                if (v != height) {
                        printf("%s: level %d: bad height: %d, should be %d\n",
                                         TestName, l, v, height);
                        return false;
                }


                /* Added to test glGetTextureLevelParameterfv */
                glGetTextureLevelParameterfv(tex, l, GL_TEXTURE_WIDTH,
                                             &vfloat);
                if (vfloat != (GLfloat) width) {
                        printf("%s: level %d: bad width: %.2f, "
                               "should be %.2f\n",
                                TestName, l, vfloat, (GLfloat) width);
                        return false;
                }

                glGetTextureLevelParameterfv(tex, l, GL_TEXTURE_HEIGHT,
                                             &vfloat);
                if (vfloat != (GLfloat) height) {
                        printf("%s: level %d: bad height: %.2f, "
                               "should be %.2f\n",
                                TestName, l, vfloat, (GLfloat) height);
                        return false;
                }


                if (width > 1)
                        width /= 2;
                if (height > 1)
                        height /= 2;
        }

        /* This should generate and error (bad level) */
        if (!piglit_khr_no_error) {
                GLubyte *buf = create_image(width, height, Colors[l]);
                GLenum err;

                glTextureSubImage2D(tex, levels, 0, 0, width, height,
                                GL_RGBA, GL_UNSIGNED_BYTE, buf);

                err = glGetError();
                if (err == GL_NO_ERROR) {
                        printf("%s: glTextureSubImage2D(illegal level)"
                               " failed to generate an error.\n",
                               TestName);
                        return false;
                }

                free(buf);
        }

        /* now do a rendering test */
        glTextureParameteri(tex, GL_TEXTURE_MIN_FILTER,
                        GL_NEAREST_MIPMAP_NEAREST);
        glTextureParameteri(tex, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

        prog = dsa_create_program(GL_TEXTURE_2D);
        glUseProgram(prog);

        /* draw a quad using each texture mipmap level */
        for (l = 0; l < levels; l++) {
                GLfloat expected[4];
                GLint p;

                glTextureParameteri(tex, GL_TEXTURE_BASE_LEVEL, l);
                glTextureParameteri(tex, GL_TEXTURE_MAX_LEVEL, l);

                glClear(GL_COLOR_BUFFER_BIT);

                piglit_draw_rect_tex(-1.0, -1.0, 2.0, 2.0,
                                     0.0, 0.0, 1.0, 1.0);

                expected[0] = Colors[l][0] / 255.0;
                expected[1] = Colors[l][1] / 255.0;
                expected[2] = Colors[l][2] / 255.0;
                expected[3] = Colors[l][3] / 255.0;

                p = piglit_probe_pixel_rgb(piglit_width/2, piglit_height/2,
                                           expected);

                piglit_present_results();

                if (!p) {
                        printf("%s: wrong color for mipmap level %d\n",
                               TestName, l);
                        return false;
                }
        }

        glUseProgram(0);
        glDeleteProgram(prog);

        glDeleteTextures(1, &tex);

        return true;
}


/**
 * Per issue 27 of the spec, only sized internalFormat values are allowed.
 * Ex: GL_RGBA8 is OK but GL_RGBA is illegal.
 * Check some common formats here.  These lists aren't exhaustive since
 * there are many extensions/versions that could effect the lists (ex:
 * integer formats, etc.)
 */
static bool
test_internal_formats(void)
{
        const GLenum target = GL_TEXTURE_2D;
        static const GLenum legal_formats[] = {
                GL_RGB4,
                GL_RGB5,
                GL_RGB8,
                GL_RGBA2,
                GL_RGBA4,
                GL_RGBA8,
                GL_DEPTH_COMPONENT16,
                GL_DEPTH_COMPONENT32
        };
        static const GLenum illegal_formats[] = {
                GL_ALPHA,
                GL_LUMINANCE,
                GL_LUMINANCE_ALPHA,
                GL_INTENSITY,
                GL_RGB,
                GL_RGBA,
                GL_DEPTH_COMPONENT,
                GL_COMPRESSED_ALPHA,
                GL_COMPRESSED_LUMINANCE_ALPHA,
                GL_COMPRESSED_LUMINANCE,
                GL_COMPRESSED_INTENSITY,
                GL_COMPRESSED_RGB,
                GL_COMPRESSED_RGBA,
                GL_COMPRESSED_RGBA,
                GL_COMPRESSED_SRGB,
                GL_COMPRESSED_SRGB_ALPHA,
                GL_COMPRESSED_SLUMINANCE,
                GL_COMPRESSED_SLUMINANCE_ALPHA
        };
        GLuint tex;
        bool pass = true;
        int i;

        for (i = 0; i < ARRAY_SIZE(legal_formats); i++) {
                glCreateTextures(target, 1, &tex);
                glBindTextureUnit(0, tex);

                glTextureStorage2D(tex, 1, legal_formats[i], 32, 32);

                if (!piglit_check_gl_error(GL_NO_ERROR)) {
                        printf("%s: internal format %s should be legal"
                               " but raised an error.",
                               TestName,
                               piglit_get_gl_enum_name(legal_formats[i]));
                        pass = false;
                }

                glDeleteTextures(1, &tex);
        }

        /* Return early if KHR_no_error is enabled */
        if (piglit_khr_no_error)
                return pass;

        for (i = 0; i < ARRAY_SIZE(illegal_formats); i++) {
                glCreateTextures(target, 1, &tex);
                glBindTextureUnit(0, tex);

                glTextureStorage2D(tex, 1, illegal_formats[i], 32, 32);

                if (!piglit_check_gl_error(GL_INVALID_ENUM)) {
                        printf("%s: internal format %s should be illegal"
                               " but didn't raised an error.",
                               TestName,
                               piglit_get_gl_enum_name(illegal_formats[i]));
                        pass = false;
                }

                glDeleteTextures(1, &tex);
        }

        return pass;
}
        
static bool
test_immutablity(GLenum target)
{
        GLuint tex;
        GLint level;
        GLint immutable_format;

        bool pass = true;

        glCreateTextures(target, 1, &tex);
        glBindTextureUnit(0, tex);

        glTextureStorage2D(tex, 3, GL_RGBA8, 256, 256);
        glTextureParameteri(tex, GL_TEXTURE_MAX_LEVEL, 4);
        glGetTextureParameteriv(tex, GL_TEXTURE_MAX_LEVEL, &level);
        glGetTextureParameteriv(tex, GL_TEXTURE_IMMUTABLE_FORMAT,
                            &immutable_format);

        if (immutable_format != GL_TRUE) {
                printf("%s: GL_TEXTURE_IMMUTABLE_FORMAT was not set to "
                       "GL_TRUE after glTextureStorage2D\n", TestName);
                pass = false;
        }
        if (level != 2) {
                /* The ARB_texture_storage spec says:
                 *
                 *     "However, if TEXTURE_IMMUTABLE_FORMAT is TRUE, then
                 *     level_base is clamped to the range [0, <levels> - 1]
                 *     and level_max is then clamped to the range [level_base,
                 *     <levels> - 1], where <levels> is the parameter passed
                 *     the call to TexStorage* for the texture object"
                 */
                printf("%s: GL_TEXTURE_MAX_LEVEL changed to %d, which is "
                       "outside the clamp range for immutables\n",
                       TestName, level);
                pass = false;
        }

        /* Other immutable tests happen per-format above */

        glDeleteTextures(1, &tex);
        return pass;
}

#define X(f, n)                                                         \
        do {                                                            \
                const bool subtest_pass = (f);                          \
                piglit_report_subtest_result(subtest_pass               \
                                             ? PIGLIT_PASS : PIGLIT_FAIL, \
                                             (n));                      \
                pass = pass && subtest_pass;                            \
        } while (0)

enum piglit_result
piglit_display(void)
{
        bool pass = true;

        X(test_one_level_errors(GL_TEXTURE_1D), "1D non-mipmapped");
        X(test_one_level_errors(GL_TEXTURE_2D), "2D non-mipmapped");
        X(test_one_level_errors(GL_TEXTURE_3D), "3D non-mipmapped");
        X(test_mipmap_errors(GL_TEXTURE_1D), "1D mipmapped");
        X(test_mipmap_errors(GL_TEXTURE_2D), "2D mipmapped");
        X(test_mipmap_errors(GL_TEXTURE_3D), "3D mipmapped");
        X(test_2d_mipmap_rendering(), "2D mipmap rendering");
        X(test_internal_formats(), "internal formats");
        X(test_immutablity(GL_TEXTURE_2D), "immutability");
        X(test_cube_texture(), "cube texture");

        if (piglit_is_extension_supported("GL_ARB_texture_cube_map_array"))
                X(test_cube_array_texture(), "cube array texture");
        else
                piglit_report_subtest_result(PIGLIT_SKIP,
                                             "cube array texture");

        return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}


void
piglit_init(int argc, char **argv)
{
        piglit_require_extension("GL_ARB_texture_storage");
        piglit_require_extension("GL_ARB_direct_state_access");
}