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[rlgl] configure default shader float precision with defines

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This commit is contained in:
ssleert 2026-06-08 16:57:07 +03:00
parent 9bd3d84f3d
commit a57d88144f
2 changed files with 28 additions and 0 deletions
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6
src/config.h
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@ -206,6 +206,12 @@
//#define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE0 "texture0" // texture0 (texture slot active 0)
//#define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE1 "texture1" // texture1 (texture slot active 1)
//#define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE2 "texture2" // texture2 (texture slot active 2)
// When gles is used, the standard precision for vertex and fragment shaders is mediump.
// For more precision, use these defines
// #define RL_DEFAULT_SHADER_VERTEX_PRECISION_HIGHP
// #define RL_DEFAULT_SHADER_FRAGMENT_PRECISION_HIGHP
//------------------------------------------------------------------------------------
//------------------------------------------------------------------------------------

22
src/rlgl.h
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@ -78,6 +78,12 @@
* #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE1 "texture1" // texture1 (texture slot active 1)
* #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE2 "texture2" // texture2 (texture slot active 2)
*
* When gles is used, the standard precision for vertex and fragment shaders is mediump.
* For more precision, use these defines
*
* #define RL_DEFAULT_SHADER_VERTEX_PRECISION_HIGHP
* #define RL_DEFAULT_SHADER_FRAGMENT_PRECISION_HIGHP
*
* DEPENDENCIES:
* - OpenGL libraries (depending on platform and OpenGL version selected)
* - GLAD OpenGL extensions loading library (only for OpenGL 3.3 Core, 4.3 Core)
@ -5028,7 +5034,11 @@ static void rlLoadShaderDefault(void)
#if defined(GRAPHICS_API_OPENGL_ES3)
"#version 300 es \n"
#ifdef RL_DEFAULT_SHADER_VERTEX_PRECISION_HIGHP
"precision highp float; \n"
#else
"precision mediump float; \n" // Precision required for OpenGL ES3 (WebGL 2) (on some browsers)
#endif
"in vec3 vertexPosition; \n"
"in vec2 vertexTexCoord; \n"
"in vec4 vertexColor; \n"
@ -5036,7 +5046,11 @@ static void rlLoadShaderDefault(void)
"out vec4 fragColor; \n"
#elif defined(GRAPHICS_API_OPENGL_ES2)
"#version 100 \n"
#ifdef RL_DEFAULT_SHADER_VERTEX_PRECISION_HIGHP
"precision highp float; \n"
#else
"precision mediump float; \n" // Precision required for OpenGL ES2 (WebGL) (on some browsers)
#endif
"attribute vec3 vertexPosition; \n"
"attribute vec2 vertexTexCoord; \n"
"attribute vec4 vertexColor; \n"
@ -5081,7 +5095,11 @@ static void rlLoadShaderDefault(void)
#if defined(GRAPHICS_API_OPENGL_ES3)
"#version 300 es \n"
#ifdef RL_DEFAULT_SHADER_FRAGMENT_PRECISION_HIGHP
"precision highp float; \n"
#else
"precision mediump float; \n" // Precision required for OpenGL ES3 (WebGL 2)
#endif
"in vec2 fragTexCoord; \n"
"in vec4 fragColor; \n"
"out vec4 finalColor; \n"
@ -5094,7 +5112,11 @@ static void rlLoadShaderDefault(void)
"} \n";
#elif defined(GRAPHICS_API_OPENGL_ES2)
"#version 100 \n"
#ifdef RL_DEFAULT_SHADER_FRAGMENT_PRECISION_HIGHP
"precision highp float; \n"
#else
"precision mediump float; \n" // Precision required for OpenGL ES2 (WebGL)
#endif
"varying vec2 fragTexCoord; \n"
"varying vec4 fragColor; \n"
"uniform sampler2D texture0; \n"