git.sesse.net Git - nageru/blob - tweaked_inputs.cpp

   1 #include <epoxy/gl.h>
   2 #include <movit/flat_input.h>
   3 #include <movit/util.h>
   4
   5 #include "tweaked_inputs.h"
   6
   7 sRGBSwitchingFlatInput::~sRGBSwitchingFlatInput()
   8 {
   9         if (sampler_obj != 0) {
  10                 glDeleteSamplers(1, &sampler_obj);
  11         }
  12 }
  13
  14 void sRGBSwitchingFlatInput::set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num)
  15 {
  16         movit::FlatInput::set_gl_state(glsl_program_num, prefix, sampler_num);
  17         texture_unit = *sampler_num - 1;
  18
  19         if (sampler_obj == 0) {
  20                 glGenSamplers(1, &sampler_obj);
  21                 check_error();
  22                 glSamplerParameteri(sampler_obj, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
  23                 check_error();
  24                 glSamplerParameteri(sampler_obj, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  25                 check_error();
  26                 glSamplerParameteri(sampler_obj, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  27                 check_error()
  28                 // This needs to be done on a sampler and not a texture parameter,
  29                 // because the texture could be used from multiple different
  30                 // contexts at the same time. This flag is ignored for non-sRGB-uploaded
  31                 // textures, so we can set it without checking can_output_linear_gamma().
  32                 if (output_linear_gamma) {
  33                         glSamplerParameteri(sampler_obj, GL_TEXTURE_SRGB_DECODE_EXT, GL_DECODE_EXT);
  34                 } else {
  35                         glSamplerParameteri(sampler_obj, GL_TEXTURE_SRGB_DECODE_EXT, GL_SKIP_DECODE_EXT);
  36                 }
  37                 check_error();
  38         }
  39
  40         glBindSampler(texture_unit, sampler_obj);
  41         check_error();
  42 }
  43
  44 void sRGBSwitchingFlatInput::clear_gl_state()
  45 {
  46         glBindSampler(texture_unit, 0);
  47         check_error();
  48 }