[Piglit] oes_texture_float tests: GL_OES_texture_float, GL_OES_texture_half_float, GL_OES_texture_float_linear and GL_OES_texture_half_float_linear
Jose Fonseca
jfonseca at vmware.com
Tue Dec 2 04:04:47 PST 2014
Tapani,
I'm getting
$ ./piglit run -d tests/all.py results/all
Traceback (most recent call last):
File "./piglit", line 148, in <module>
main()
File "./piglit", line 143, in main
returncode = parsed.func(args)
File
"/home/jfonseca/work/vmware/tests/piglit/framework/programs/run.py",
line 276, in run
profile = framework.profile.merge_test_profiles(args.test_profile)
File "/home/jfonseca/work/vmware/tests/piglit/framework/profile.py",
line 304, in merge_test_profiles
profile = load_test_profile(profiles.pop())
File "/home/jfonseca/work/vmware/tests/piglit/framework/profile.py",
line 284, in load_test_profile
os.path.splitext(os.path.basename(filename))[0]))
File "/usr/lib/python2.7/importlib/__init__.py", line 37, in
import_module
__import__(name)
File "/home/jfonseca/work/vmware/tests/piglit/tests/all.py", line
2972, in <module>
oes_texture_float['OES_texture_float'] =
concurrent_test('oes_texture_float')
NameError: name 'concurrent_test' is not defined
after you pushed this change. It doesn't look like a trivial rename
s/concurrent_test/add_concurrent_test/ will do.
Could you please fix this and/or revert it?
Jose
On 28/11/14 11:21, Tapani wrote:
> On 11/28/2014 12:16 PM, Rogovin, Kevin wrote:
>> HI,
>>
>> Thankyou for the review!
>>
>> Most embarrassingly, I am not too sure what would the proper
>> copyright notice should be for the .c file. It started as a -copy- of
>> the .c file of the .c file for ARB_texture_float ... and then I also
>> copied code directly from Mesa. Should I just -add- Intel and each of
>> the parties listed in srx/mesa/main/imports.c ?
>
> Right, I would've added just Intel but about the Mesa bits I'm not sure.
> Now that I started to check things, I spotted that there's
> 'piglit_half_from_float' as part of piglit-util.h which was copypaste
> from Mesa, maybe_mesa_float_to_half could be added as
> 'piglit_float_to_half' so other tests could use it also?
>
>> -Kevin
>>
>> -----Original Message-----
>> From: Palli, Tapani
>> Sent: Friday, November 28, 2014 9:09 AM
>> To: Rogovin, Kevin; piglit at lists.freedesktop.org
>> Subject: Re: oes_texture_float tests: GL_OES_texture_float,
>> GL_OES_texture_half_float, GL_OES_texture_float_linear and
>> GL_OES_texture_half_float_linear
>>
>> I believe you'll need to add additional copyright line there when
>> submitting, otherwise:
>>
>> Reviewed-by: Tapani Pälli <tapani.palli at intel.com>
>>
>> On 08/01/2014 09:26 AM, Kevin Rogovin wrote:
>>> From: Kevin Rogovin <kevin.rogovin at intel.com>
>>>
>>> Adds unit tests (based off of ARB_texture_float unit test) for GLES2
>>> texture float extensions.
>>>
>>> ---
>>> tests/all.py | 18 +
>>> tests/spec/CMakeLists.txt | 1 +
>>> tests/spec/oes_texture_float/CMakeLists.gles2.txt | 6 +
>>> tests/spec/oes_texture_float/CMakeLists.txt | 1 +
>>> tests/spec/oes_texture_float/oes_texture_float.c | 529
>>> ++++++++++++++++++++++
>>> 5 files changed, 555 insertions(+)
>>> create mode 100644 tests/spec/oes_texture_float/CMakeLists.gles2.txt
>>> create mode 100644 tests/spec/oes_texture_float/CMakeLists.txt
>>> create mode 100644 tests/spec/oes_texture_float/oes_texture_float.c
>>>
>>> diff --git a/tests/all.py b/tests/all.py index 9d7a861..6b2fc15 100644
>>> --- a/tests/all.py
>>> +++ b/tests/all.py
>>> @@ -2865,6 +2865,24 @@ add_texwrap_format_tests(arb_texture_float,
>>> 'GL_ARB_texture_float')
>>> add_plain_test(arb_texture_float,
>>> 'arb_texture_float-texture-float-formats')
>>> add_msaa_formats_tests(arb_texture_float, 'GL_ARB_texture_float')
>>> +
>>> +oes_texture_float = {}
>>> +spec['OES_texture_float'] = oes_texture_float
>>> +oes_texture_float['OES_texture_float'] =
>>> +concurrent_test('oes_texture_float')
>>> +
>>> +oes_texture_half_float = {}
>>> +spec['OES_texture_half_float'] = oes_texture_half_float
>>> +oes_texture_half_float['OES_texture_half_float'] =
>>> +concurrent_test('oes_texture_float half')
>>> +
>>> +oes_texture_float_linear = {}
>>> +spec['OES_texture_float_linear'] = oes_texture_float_linear
>>> +oes_texture_float_linear['OES_texture_float_linear'] =
>>> +concurrent_test('oes_texture_float linear')
>>> +
>>> +oes_texture_half_float_linear = {}
>>> +spec['OES_texture_half_float_linear'] = oes_texture_half_float_linear
>>> +oes_texture_half_float_linear['OES_texture_half_float_linear'] =
>>> +concurrent_test('oes_texture_float half linear')
>>> +
>>> +
>>> ext_texture_integer = {}
>>> spec['EXT_texture_integer'] = ext_texture_integer
>>> # unsupported for int yet
>>> diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
>>> index c7001f1..c679e15 100644
>>> --- a/tests/spec/CMakeLists.txt
>>> +++ b/tests/spec/CMakeLists.txt
>>> @@ -109,3 +109,4 @@ add_subdirectory (ext_image_dma_buf_import)
>>> add_subdirectory (arb_blend_func_extended)
>>> add_subdirectory (ext_unpack_subimage)
>>> add_subdirectory (arb_vertex_array_object)
>>> +add_subdirectory (oes_texture_float)
>>> diff --git a/tests/spec/oes_texture_float/CMakeLists.gles2.txt
>>> b/tests/spec/oes_texture_float/CMakeLists.gles2.txt
>>> new file mode 100644
>>> index 0000000..4e787e2
>>> --- /dev/null
>>> +++ b/tests/spec/oes_texture_float/CMakeLists.gles2.txt
>>> @@ -0,0 +1,6 @@
>>> +include_directories(
>>> + ${GLEXT_INCLUDE_DIR}
>>> + ${OPENGL_INCLUDE_PATH}
>>> +)
>>> +link_libraries(piglitutil_${piglit_target_api})
>>> +piglit_add_executable(oes_texture_float oes_texture_float.c)
>>> diff --git a/tests/spec/oes_texture_float/CMakeLists.txt
>>> b/tests/spec/oes_texture_float/CMakeLists.txt
>>> new file mode 100644
>>> index 0000000..144a306
>>> --- /dev/null
>>> +++ b/tests/spec/oes_texture_float/CMakeLists.txt
>>> @@ -0,0 +1 @@
>>> +piglit_include_target_api()
>>> diff --git a/tests/spec/oes_texture_float/oes_texture_float.c
>>> b/tests/spec/oes_texture_float/oes_texture_float.c
>>> new file mode 100644
>>> index 0000000..9564ca7
>>> --- /dev/null
>>> +++ b/tests/spec/oes_texture_float/oes_texture_float.c
>>> @@ -0,0 +1,529 @@
>>> +/*
>>> + * Copyright (c) 2011 VMware, Inc.
>>> + *
>>> + * 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 VMWARE AND/OR THEIR SUPPLIERS
>>> + * 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.
>>> + */
>>> +
>>> +/**
>>> + * Tests for:
>>> + * GL_OES_texture_float,
>>> + * GL_OES_texture_half_float,
>>> + * GL_OES_texture_float_linear and
>>> + * GL_OES_texture_half_float_linear
>>> + *
>>> + * Usage: oes_texture_float [half] [linear]
>>> + *
>>> + */
>>> +
>>> +
>>> +#include <stdio.h>
>>> +
>>> +#include "piglit-util-gl.h"
>>> +
>>> +PIGLIT_GL_TEST_CONFIG_BEGIN
>>> +
>>> + config.supports_gl_es_version = 20;
>>> +
>>> + config.window_visual = PIGLIT_GL_VISUAL_RGBA |
>>> +PIGLIT_GL_VISUAL_DOUBLE;
>>> +
>>> +PIGLIT_GL_TEST_CONFIG_END
>>> +
>>> +static GLint TexWidth = 16, TexHeight = 16; static GLint BiasUniform
>>> += -1, ScaleUniform = -1, TexUniform = -1; static const float Scale =
>>> +1.0 / 2000.0, Bias = 0.5;
>>> +
>>> +
>>> +
>>> +struct format_info
>>> +{
>>> + const char *Name;
>>> + GLenum Format;
>>> + int NumComponents;
>>> +};
>>> +
>>> +static const struct format_info Formats[] = {
>>> + { "GL_RGBA", GL_RGBA, 4 },
>>> + { "GL_RGB", GL_RGB, 3 },
>>> + { "GL_ALPHA", GL_ALPHA, 1 },
>>> + { "GL_LUMINANCE", GL_LUMINANCE, 1 },
>>> + { "GL_LUMINANCE_ALPHA", GL_LUMINANCE_ALPHA, 2 }, };
>>> +
>>> +static const char *VertShaderText =
>>> + "attribute highp vec2 coord01; \n"
>>> + "varying mediump vec2 tex_coord; \n"
>>> + "void main() \n"
>>> + "{ \n"
>>> + " tex_coord = coord01; \n"
>>> + " gl_Position =vec4(coord01*2.0 - vec2(1.0, 1.0), 0.0, 1.0); \n"
>>> + "} \n";
>>> +
>>> +static const char *FragShaderText =
>>> + "uniform mediump float bias, scale; \n"
>>> + "uniform mediump sampler2D tex; \n"
>>> + "varying mediump vec2 tex_coord; \n"
>>> + "void main() \n"
>>> + "{ \n"
>>> + " mediump vec4 t = vec4(texture2D(tex, tex_coord.xy)); \n"
>>> + " gl_FragColor = t * scale + bias; \n"
>>> + "} \n";
>>> +
>>> +
>>> +static GLuint Program, AttributeLoc;
>>> +
>>> +
>>> +
>>> +static void
>>> +fill_array_fp32(int comps, int texels, void *buf, const float val[4])
>>> +{
>>> + GLfloat *f = (GLfloat*) buf;
>>> + int i, j;
>>> +
>>> + for (i = 0; i < texels; i++) {
>>> + for (j = 0; j < comps; j++) {
>>> + f[i * comps + j] = val[j];
>>> + }
>>> + }
>>> +}
>>> +
>>> +
>>> +/* Taken from Mesa: src/mesa/main/imports.h */ typedef union {
>>> +GLfloat f; GLint i; GLuint u; } fi_type; static inline int
>>> +IROUND(float f) {
>>> + return (int) ((f >= 0.0F) ? (f + 0.5F) : (f - 0.5F)); }
>>> +
>>> +
>>> +/* Taken from Mesa: src/mesa/main/imports.c */
>>> +static int
>>> +_mesa_round_to_even(float val)
>>> +{
>>> + int rounded = IROUND(val);
>>> +
>>> + if (val - floor(val) == 0.5) {
>>> + if (rounded % 2 != 0)
>>> + rounded += val > 0 ? -1 : 1;
>>> + }
>>> +
>>> + return rounded;
>>> +}
>>> +
>>> +static uint16_t
>>> +_mesa_float_to_half(float val)
>>> +{
>>> + const fi_type fi = {val};
>>> + const int flt_m = fi.i & 0x7fffff;
>>> + const int flt_e = (fi.i >> 23) & 0xff;
>>> + const int flt_s = (fi.i >> 31) & 0x1;
>>> + int s, e, m = 0;
>>> + uint16_t result;
>>> +
>>> + /* sign bit */
>>> + s = flt_s;
>>> +
>>> + /* handle special cases */
>>> + if ((flt_e == 0) && (flt_m == 0)) {
>>> + /* zero */
>>> + /* m = 0; - already set */
>>> + e = 0;
>>> + }
>>> + else if ((flt_e == 0) && (flt_m != 0)) {
>>> + /* denorm -- denorm float maps to 0 half */
>>> + /* m = 0; - already set */
>>> + e = 0;
>>> + }
>>> + else if ((flt_e == 0xff) && (flt_m == 0)) {
>>> + /* infinity */
>>> + /* m = 0; - already set */
>>> + e = 31;
>>> + }
>>> + else if ((flt_e == 0xff) && (flt_m != 0)) {
>>> + /* NaN */
>>> + m = 1;
>>> + e = 31;
>>> + }
>>> + else {
>>> + /* regular number */
>>> + const int new_exp = flt_e - 127;
>>> + if (new_exp < -14) {
>>> + /* The float32 lies in the range (0.0, min_normal16) and is
>>> rounded
>>> + * to a nearby float16 value. The result will be either
>>> zero, subnormal,
>>> + * or normal.
>>> + */
>>> + e = 0;
>>> + m = _mesa_round_to_even((1 << 24) * fabsf(fi.f));
>>> + }
>>> + else if (new_exp > 15) {
>>> + /* map this value to infinity */
>>> + /* m = 0; - already set */
>>> + e = 31;
>>> + }
>>> + else {
>>> + /* The float32 lies in the range
>>> + * [min_normal16, max_normal16 + max_step16)
>>> + * and is rounded to a nearby float16 value. The result
>>> will be
>>> + * either normal or infinite.
>>> + */
>>> + e = new_exp + 15;
>>> + m = _mesa_round_to_even(flt_m / (float) (1 << 13));
>>> + }
>>> + }
>>> +
>>> + assert(0 <= m && m <= 1024);
>>> + if (m == 1024) {
>>> + /* The float32 was rounded upwards into the range of the next
>>> exponent,
>>> + * so bump the exponent. This correctly handles the case where
>>> f32
>>> + * should be rounded up to float16 infinity.
>>> + */
>>> + ++e;
>>> + m = 0;
>>> + }
>>> +
>>> + result = (s << 15) | (e << 10) | m;
>>> + return result;
>>> +
>>> +}
>>> +
>>> +static void
>>> +fill_array_fp16(int comps, int texels, void *buf, const float val[4])
>>> +{
>>> + uint16_t *f = (uint16_t*) buf;
>>> + int i, j;
>>> +
>>> + for (i = 0; i < texels; i++) {
>>> + for (j = 0; j < comps; j++) {
>>> + f[i * comps + j] = _mesa_float_to_half(val[j]);
>>> + }
>>> + }
>>> +}
>>> +
>>> +
>>> +struct texture_float_info
>>> +{
>>> + void (*fill_array)(int comps, int texels, void *buf, const float
>>> val[4]);
>>> + GLenum TextureType;
>>> + size_t SizeOfType;
>>> + const char *TestName;
>>> + const char *ExtensionName;
>>> + const char *ExtensionNameLinearFilter;
>>> +};
>>> +
>>> +const struct texture_float_info Tests[]=
>>> + {
>>> + {
>>> + fill_array_fp32,
>>> + GL_FLOAT, 4,
>>> + "oes-texture-float",
>>> + "GL_OES_texture_float",
>>> + "GL_OES_texture_float_linear"
>>> + },
>>> +
>>> + {
>>> + fill_array_fp16,
>>> + GL_HALF_FLOAT_OES, 2,
>>> + "oes-texture-half-float",
>>> + "GL_OES_texture_half_float",
>>> + "GL_OES_texture_half_float_linear"
>>> + },
>>> + };
>>> +
>>> +
>>> +static GLboolean
>>> +check_error(const char *file, int line, const struct
>>> texture_float_info *test)
>>> +{
>>> + GLenum err = glGetError();
>>> + if (err) {
>>> + printf("%s: error 0x%x at %s:%d\n", test->TestName, err, file,
>>> line);
>>> + return GL_TRUE;
>>> + }
>>> + return GL_FALSE;
>>> +}
>>> +
>>> +
>>> +/** Scale a float in [-1000, 1000] to [0, 1] */
>>> +static float
>>> +scale_and_bias(float val)
>>> +{
>>> + return val * Scale + Bias;
>>> +}
>>> +
>>> +
>>> +/**
>>> + * Get a color to use for filling the texture image.
>>> + * Range of values is [-1000, 1000]
>>> + */
>>> +static void
>>> +get_texture_color(GLfloat value[4])
>>> +{
>>> + static const GLfloat colors[12][4] = {
>>> + { 690.0, 633.0, -649.0, -975.0 },
>>> + { 409.0, -678.0, 624.0, -976.0 },
>>> + { -460.0, -102.0, -983.0, 120.0 },
>>> + { 202.0, 75.0, 826.0, -339.0 },
>>> + { -709.0, 620.0, 204.0, -666.0 },
>>> + { 718.0, -299.0, 290.0, 383.0 },
>>> + { 634.0, 235.0, 571.0, -651.0 },
>>> + { -984.0, -99.0, 448.0, 263.0 },
>>> + { -466.0, 356.0, -155.0, 500.0 },
>>> + { 678.0, -531.0, 81.0, -783.0 },
>>> + { -76.0, 98.0, -106.0, -875.0 },
>>> + { 730.0, -723.0, -656.0, -980.0 }
>>> + };
>>> + static int i = 0;
>>> + value[0] = colors[i][0];
>>> + value[1] = colors[i][1];
>>> + value[2] = colors[i][2];
>>> + value[3] = colors[i][3];
>>> + i = (i + 1) % 12;
>>> +}
>>> +
>>> +
>>> +/** \return GL_TRUE for pass, GL_FALSE for fail */
>>> +static GLboolean
>>> +test_format(const struct format_info *info, const struct
>>> texture_float_info *test, GLboolean generate_mipmap)
>>> +{
>>> + const int comps = info->NumComponents;
>>> + const int texels = TexWidth * TexHeight;
>>> + const int w = piglit_width / 10;
>>> + const int h = piglit_height / 10;
>>> + GLfloat expected[4];
>>> + void *image;
>>> + float value[4];
>>> + int p;
>>> + GLushort drawIndices[] =
>>> + {
>>> + 0, 1, 2,
>>> + 0, 2, 3
>>> + };
>>> +
>>> + /** printf("Testing %s of %s\n", info->Name, test->TestName); **/
>>> +
>>> + get_texture_color(value);
>>> +
>>> + /* alloc, fill texture image */
>>> + image = malloc(comps * texels * test->SizeOfType);
>>> + test->fill_array(comps, texels, image, value);
>>> +
>>> +
>>> + glTexImage2D(GL_TEXTURE_2D, 0, info->Format, TexWidth, TexHeight, 0,
>>> + info->Format, test->TextureType, image);
>>> + if(generate_mipmap) {
>>> + int w, h, l;
>>> + for(w=TexWidth/2, h=TexHeight/2, l=1; w>0 || h>0; w/=2, h/=2,
>>> ++l) {
>>> + int useW, useH;
>>> + useW = (w!=0) ? w : 1;
>>> + useH = (h!=0) ? h : 1;
>>> + glTexImage2D(GL_TEXTURE_2D, l, info->Format, useW, useH, 0,
>>> + info->Format, test->TextureType, image);
>>> + }
>>> + }
>>> +
>>> + free(image);
>>> +
>>> + if (check_error(__FILE__, __LINE__, test))
>>> + return GL_FALSE;
>>> +
>>> + /* compute expected color */
>>> + switch (info->Format) {
>>> + case GL_RGBA:
>>> + expected[0] = scale_and_bias(value[0]);
>>> + expected[1] = scale_and_bias(value[1]);
>>> + expected[2] = scale_and_bias(value[2]);
>>> + expected[3] = scale_and_bias(value[3]);
>>> + break;
>>> + case GL_RGB:
>>> + expected[0] = scale_and_bias(value[0]);
>>> + expected[1] = scale_and_bias(value[1]);
>>> + expected[2] = scale_and_bias(value[2]);
>>> + expected[3] = scale_and_bias(1.0);
>>> + break;
>>> + case GL_ALPHA:
>>> + expected[0] =
>>> + expected[1] =
>>> + expected[2] = scale_and_bias(0.0);
>>> + expected[3] = scale_and_bias(value[0]);
>>> + break;
>>> + case GL_LUMINANCE:
>>> + expected[0] =
>>> + expected[1] =
>>> + expected[2] = scale_and_bias(value[0]);
>>> + expected[3] = scale_and_bias(1.0);
>>> + break;
>>> + case GL_LUMINANCE_ALPHA:
>>> + expected[0] =
>>> + expected[1] =
>>> + expected[2] = scale_and_bias(value[0]);
>>> + expected[3] = scale_and_bias(value[1]);
>>> + break;
>>> + default:
>>> + abort();
>>> + }
>>> +
>>> + /* draw */
>>> +
>>> +
>>> +
>>> + glClearColor(0.5, 0.5, 0.5, 0.0);
>>> + glClear(GL_COLOR_BUFFER_BIT);
>>> + glDisable(GL_DEPTH_TEST);
>>> + glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, drawIndices);
>>> +
>>> + /* test */
>>> + p = piglit_probe_pixel_rgba(w/2, h/2, expected);
>>> + if (!p) {
>>> + int i;
>>> +
>>> + printf(" Failed with format %s:\n", info->Name);
>>> + printf(" Texture color = ");
>>> + for (i = 0; i < comps; i++) {
>>> + printf("%f", value[i]);
>>> + if (i + 1 < comps)
>>> + printf(", ");
>>> + }
>>> + printf("\n");
>>> + }
>>> +
>>> + piglit_swap_buffers();
>>> +
>>> +
>>> + return p;
>>> +}
>>> +
>>> +static GLboolean
>>> +test_each_format(const struct texture_float_info *test, GLboolean
>>> generate_mipmap)
>>> +{
>>> + int f;
>>> + GLboolean pass = GL_TRUE;
>>> + for (f = 0; f < ARRAY_SIZE(Formats); f++) {
>>> + if (!test_format(&Formats[f], test, generate_mipmap)) {
>>> + pass = GL_FALSE;
>>> + }
>>> + }
>>> + return pass;
>>> +}
>>> +
>>> +static const struct texture_float_info *ActiveTest = NULL;
>>> +static GLboolean linearFilter = GL_FALSE;
>>> +
>>> +
>>> +enum piglit_result
>>> +piglit_display(void)
>>> +{
>>> + GLboolean pass = GL_TRUE;
>>> + GLenum minFilters[] =
>>> + {
>>> + GL_NEAREST,
>>> + GL_LINEAR,
>>> + GL_NEAREST_MIPMAP_NEAREST,
>>> + GL_NEAREST_MIPMAP_LINEAR,
>>> + GL_LINEAR_MIPMAP_NEAREST,
>>> + GL_LINEAR_MIPMAP_LINEAR,
>>> + };
>>> + GLenum magFilters[] =
>>> + {
>>> + GL_NEAREST,
>>> + GL_LINEAR,
>>> + };
>>> +
>>> + if (linearFilter) {
>>> + int i, j;
>>> + GLenum magFilter, minFilter;
>>> +
>>> + for (i = 0; i < ARRAY_SIZE(magFilters); ++i) {
>>> + magFilter = magFilters[i];
>>> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
>>> magFilter);
>>> + for (j = 0; j < ARRAY_SIZE(minFilters); ++j) {
>>> + minFilter = minFilters[j];
>>> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
>>> minFilter);
>>> + if (!test_each_format(ActiveTest, minFilter!=GL_NEAREST
>>> && minFilter!=GL_LINEAR)) {
>>> + pass = GL_FALSE;
>>> + }
>>> + }
>>> + }
>>> + } else {
>>> + pass = test_each_format(ActiveTest, GL_FALSE);
>>> + }
>>> +
>>> + return pass ? PIGLIT_PASS : PIGLIT_FAIL;
>>> +}
>>> +
>>> +static GLfloat AttributeValues[] =
>>> + {
>>> + 0.0f, 0.0f,
>>> + 1.0f, 0.0f,
>>> + 1.0f, 1.0f,
>>> + 0.0f, 1.0f,
>>> + };
>>> +
>>> +void
>>> +piglit_init(int argc, char **argv)
>>> +{
>>> + GLuint Texture;
>>> + GLboolean half = GL_FALSE;
>>> + int i;
>>> +
>>> + for (i = 1; i<argc; ++i) {
>>> + if (!strcmp(argv[i], "half")) {
>>> + half = GL_TRUE;
>>> + } else if (!strcmp(argv[i], "linear")) {
>>> + linearFilter = GL_TRUE;
>>> + }
>>> + }
>>> +
>>> + if (half) {
>>> + ActiveTest = &Tests[1];
>>> + } else {
>>> + ActiveTest = &Tests[0];
>>> + }
>>> +
>>> + if (linearFilter) {
>>> + piglit_require_extension(ActiveTest->ExtensionNameLinearFilter);
>>> + }
>>> + piglit_require_extension(ActiveTest->ExtensionName);
>>> +
>>> + Program = piglit_build_simple_program(VertShaderText,
>>> FragShaderText);
>>> +
>>> + glUseProgram(Program);
>>> +
>>> + BiasUniform = glGetUniformLocation(Program, "bias");
>>> + ScaleUniform = glGetUniformLocation(Program, "scale");
>>> + TexUniform = glGetUniformLocation(Program, "tex");
>>> +
>>> + glUniform1f(BiasUniform, Bias);
>>> + glUniform1f(ScaleUniform, Scale);
>>> + glUniform1i(TexUniform, 0); /* tex unit zero */
>>> +
>>> + AttributeLoc = glGetAttribLocation(Program, "coord01");
>>> + glEnableVertexAttribArray(AttributeLoc);
>>> + glVertexAttribPointer(AttributeLoc, 2, //slot, count
>>> + GL_FLOAT, GL_FALSE, //type, normalized
>>> + 2*sizeof(float), //stride
>>> + AttributeValues); //pointer/offset
>>> +
>>> + (void) check_error(__FILE__, __LINE__, ActiveTest);
>>> +
>>> +
>>> + glGenTextures(1, &Texture);
>>> + glBindTexture(GL_TEXTURE_2D, Texture);
>>> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>>> + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>>> +}
>
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