ecere/gfx/drivers/OpenGL: Exponential fog support in vertex shader

[sdk] / ecere / src / gfx / drivers / gl3 / shading.ec

diff --git a/ecere/src/gfx/drivers/gl3/shading.ec b/ecere/src/gfx/drivers/gl3/shading.ec
index 83ccb02..28ad774 100644 (file)
--- a/ecere/src/gfx/drivers/gl3/shading.ec
+++ b/ecere/src/gfx/drivers/gl3/shading.ec
@@ -29,6 +29,9 @@ int uTextureMatrix;
 int uColor;
 int uTexturingOn;
 int uLightingOn;
+int uFogOn;
+int uFogDensity;
+int uFogColor;
 int uGlobalAmbient;
 int uLightsOn[8];
 int uLightsPos[8];
@@ -69,6 +72,21 @@ void shader_lighting(bool on)
    glUniform1ui(uLightingOn, on);
 }
 
+void shader_fog(bool on)
+{
+   glUniform1ui(uFogOn, on);
+}
+
+void shader_fogDensity(float density)
+{
+   glUniform1f(uFogDensity, density);
+}
+
+void shader_fogColor(float r, float g, float b)
+{
+   glUniform3f(uFogColor, r, g, b);
+}
+
 void shader_texturing(bool on)
 {
    glUniform1ui(uTexturingOn, on);
@@ -299,6 +317,9 @@ void loadShaders(const String vertexShaderFile, const String fragmentShaderFile)
       uColor         = glGetUniformLocation(program, "current_color");
       uTexturingOn   = glGetUniformLocation(program, "texturingOn");
       uLightingOn    = glGetUniformLocation(program, "lightingOn");
+      uFogOn         = glGetUniformLocation(program, "fogOn");
+      uFogDensity    = glGetUniformLocation(program, "fogDensity");
+      uFogColor      = glGetUniformLocation(program, "fogColor");
       uGlobalAmbient = glGetUniformLocation(program, "globalAmbient");
       uPerVertexColor  = glGetUniformLocation(program, "perVertexColor");
       uMatDiffuse       = glGetUniformLocation(program, "matDiffuse");