[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
Tapani
tapani.palli at intel.com
Fri Nov 28 03:21:23 PST 2014
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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