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Codechange: [OpenGL] Use GLSL version 1.50 if available.

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This commit is contained in:
Michael Lutz
2021-01-16 16:43:22 +01:00
parent 90fd8f8cda
commit 821f30f735
2 changed files with 32 additions and 2 deletions
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12
src/video/opengl.cpp
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@@ -500,15 +500,23 @@ static bool VerifyProgram(GLuint program)
*/
bool OpenGLBackend::InitShaders()
{
const char *ver = (const char *)glGetString(GL_SHADING_LANGUAGE_VERSION);
if (ver == nullptr) return false;
int glsl_major = ver[0] - '0';
int glsl_minor = ver[2] - '0';
bool glsl_150 = (IsOpenGLVersionAtLeast(3, 2) || glsl_major > 1 || (glsl_major == 1 && glsl_minor >= 5));
/* Create vertex shader. */
GLuint vert_shader = _glCreateShader(GL_VERTEX_SHADER);
_glShaderSource(vert_shader, lengthof(_vertex_shader_direct), _vertex_shader_direct, nullptr);
_glShaderSource(vert_shader, glsl_150 ? lengthof(_vertex_shader_direct_150) : lengthof(_vertex_shader_direct), glsl_150 ? _vertex_shader_direct_150 : _vertex_shader_direct, nullptr);
_glCompileShader(vert_shader);
if (!VerifyShader(vert_shader)) return false;
/* Create fragment shader. */
GLuint frag_shader = _glCreateShader(GL_FRAGMENT_SHADER);
_glShaderSource(frag_shader, lengthof(_frag_shader_direct), _frag_shader_direct, nullptr);
_glShaderSource(frag_shader, glsl_150 ? lengthof(_frag_shader_direct_150) : lengthof(_frag_shader_direct), glsl_150 ? _frag_shader_direct_150 : _frag_shader_direct, nullptr);
_glCompileShader(frag_shader);
if (!VerifyShader(frag_shader)) return false;