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

   1 #include <epoxy/gl.h>
   2 #include <movit/flat_input.h>
   3 #include <movit/util.h>
   4 #include <string>
   5
   6 #include "tweaked_inputs.h"
   7
   8 sRGBSwitchingFlatInput::~sRGBSwitchingFlatInput()
   9 {
  10         if (sampler_obj != 0) {
  11                 glDeleteSamplers(1, &sampler_obj);
  12         }
  13 }
  14
  15 void sRGBSwitchingFlatInput::set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num)
  16 {
  17         movit::FlatInput::set_gl_state(glsl_program_num, prefix, sampler_num);
  18         texture_unit = *sampler_num - 1;
  19
  20         if (sampler_obj == 0) {
  21                 glGenSamplers(1, &sampler_obj);
  22                 check_error();
  23                 glSamplerParameteri(sampler_obj, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
  24                 check_error();
  25                 glSamplerParameteri(sampler_obj, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  26                 check_error();
  27                 glSamplerParameteri(sampler_obj, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  28                 check_error()
  29                 // This needs to be done on a sampler and not a texture parameter,
  30                 // because the texture could be used from multiple different
  31                 // contexts at the same time. This flag is ignored for non-sRGB-uploaded
  32                 // textures, so we can set it without checking can_output_linear_gamma().
  33                 if (output_linear_gamma) {
  34                         glSamplerParameteri(sampler_obj, GL_TEXTURE_SRGB_DECODE_EXT, GL_DECODE_EXT);
  35                 } else {
  36                         glSamplerParameteri(sampler_obj, GL_TEXTURE_SRGB_DECODE_EXT, GL_SKIP_DECODE_EXT);
  37                 }
  38                 check_error();
  39         }
  40
  41         glBindSampler(texture_unit, sampler_obj);
  42         check_error();
  43 }
  44
  45 void sRGBSwitchingFlatInput::clear_gl_state()
  46 {
  47         glBindSampler(texture_unit, 0);
  48         check_error();
  49 }