src/gallium/targets/osmesa/test-render.cpp

   1 #include <cstdint>
   2 #include <cstdio>
   3 #include <cstdlib>
   4 #include <array>
   5 #include <memory>
   6
   7 #include <gtest/gtest.h>
   8
   9 #include "GL/osmesa.h"
  10
  11
  12 typedef std::array<GLenum, 2> Params;
  13
  14 class OSMesaRenderTestFixture : public testing::TestWithParam<Params> {};
  15
  16 std::string
  17 name_params(const testing::TestParamInfo<Params> params) {
  18    auto p = params.param;
  19    std::string first, second;
  20    switch (p[0]) {
  21    case OSMESA_RGBA:
  22       first = "rgba";
  23       break;
  24    case OSMESA_BGRA:
  25       first = "bgra";
  26       break;
  27    case OSMESA_RGB:
  28       first = "rgb";
  29       break;
  30    case OSMESA_RGB_565:
  31       first = "rgb_565";
  32       break;
  33    case OSMESA_ARGB:
  34       first = "argb";
  35       break;
  36    }
  37
  38    switch (p[1]) {
  39    case GL_UNSIGNED_SHORT:
  40       second = "unsigned_short";
  41       break;
  42    case GL_UNSIGNED_BYTE:
  43       second = "unsigned_byte";
  44       break;
  45    case GL_FLOAT:
  46       second = "float";
  47       break;
  48    case GL_UNSIGNED_SHORT_5_6_5:
  49       second = "unisgned_short_565";
  50       break;
  51    }
  52
  53    return first + "_" + second;
  54 };
  55
  56 TEST_P(OSMesaRenderTestFixture, Render)
  57 {
  58    auto params = GetParam();
  59    uint32_t pixel = 0;
  60    uint32_t expected;  // This should be green for the given color model
  61    int w = 1, h = 1;
  62
  63    std::unique_ptr<osmesa_context, decltype(&OSMesaDestroyContext)> ctx{
  64       OSMesaCreateContext(params[0], NULL), &OSMesaDestroyContext};
  65    ASSERT_TRUE(ctx);
  66
  67    auto ret = OSMesaMakeCurrent(ctx.get(), &pixel, params[1], w, h);
  68    ASSERT_EQ(ret, GL_TRUE);
  69
  70    switch (params[0]) {
  71    case OSMESA_RGBA:
  72    case OSMESA_BGRA:
  73    case OSMESA_RGB:
  74       expected = 0xff << 8;
  75       glClearColor(0, 1, 0, 0);
  76       break;
  77    case OSMESA_RGB_565:
  78       expected = 0x3f << 5;
  79       glClearColor(0, 1, 0, 0);
  80       break;
  81    case OSMESA_ARGB:
  82       expected = 0xff << 24;
  83       glClearColor(0, 0, 1, 0);
  84       break;
  85    }
  86    glClear(GL_COLOR_BUFFER_BIT);
  87    glFinish();
  88
  89    ASSERT_EQ(expected, pixel);
  90 }
  91
  92 INSTANTIATE_TEST_CASE_P(
  93    OSMesaRenderTest,
  94    OSMesaRenderTestFixture,
  95    testing::Values(
  96       Params{ OSMESA_RGBA, GL_UNSIGNED_BYTE }
  97    ),
  98    name_params
  99 );