[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 04:22:22 PST 2014
I think I've figured out how add_concurrent_test() should be called and
pushed a quick fix.
Jose
On 02/12/14 12:04, Jose Fonseca wrote:
> 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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>>
>>
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