OpenGL: Add texSize uniform

CHANGES

@@ -43,6 +43,7 @@ Misc:
  - ARM7: Support forcing Thumb mode via MSR
  - ARM7: Flush prefetch cache when loading CPSR via MSR
  - Qt: Canonicalize file paths when loading games
+ - OpenGL: Add texSize uniform
 
 0.4.0: (2016-02-02)
 Features:

res/shaders/agb001.shader/agb001.fs

@@ -1,5 +1,6 @@
 varying vec2 texCoord;
 uniform sampler2D tex;
+uniform vec2 texSize;
 
 void main() {
 	vec4 color = texture2D(tex, texCoord);
@@ -14,8 +15,8 @@ void main() {
 	arrayY[2] = vec3(1.0, 1.0, 1.0);
 	arrayY[3] = vec3(0.8, 0.8, 0.8);
 	color.rgb = pow(color.rgb * vec3(0.8, 0.8, 0.8), vec3(1.8, 1.8, 1.8)) + vec3(0.16, 0.16, 0.16);
-	color.rgb *= arrayX[int(mod(texCoord.s * 960.0, 4.0))];
+	color.rgb *= arrayX[int(mod(texCoord.s * texSize.x * 4.0, 4.0))];
-	color.rgb *= arrayY[int(mod(texCoord.t * 640.0, 4.0))];
+	color.rgb *= arrayY[int(mod(texCoord.t * texSize.y * 4.0, 4.0))];
 	color.a = 0.5;
 	gl_FragColor = color;
 }

res/shaders/ags001.shader/ags001.fs

@@ -1,5 +1,6 @@
 varying vec2 texCoord;
 uniform sampler2D tex;
+uniform vec2 texSize;
 
 void main() {
 	vec4 color = texture2D(tex, texCoord);
@@ -14,8 +15,8 @@ void main() {
 	arrayY[2] = vec3(1.0, 1.0, 1.0);
 	arrayY[3] = vec3(0.9, 0.9, 0.9);
 	color.rgb = pow(color.rgb, vec3(1.6, 1.6, 1.6));
-	color.rgb *= arrayX[int(mod(texCoord.s * 960.0, 4.0))];
+	color.rgb *= arrayX[int(mod(texCoord.s * texSize.x * 4.0, 4.0))];
-	color.rgb *= arrayY[int(mod(texCoord.t * 640.0, 4.0))];
+	color.rgb *= arrayY[int(mod(texCoord.t * texSize.y * 4.0, 4.0))];
 	color.a = 0.8;
 	gl_FragColor = color;
 }

res/shaders/xbr.shader/xbr.fs

@@ -98,7 +98,7 @@ varying vec4 TEX5;
 varying vec4 TEX6;
 varying vec4 TEX7;
 
-const vec2 TextureSize = vec2(240.0, 160.0);
+uniform vec2 texSize;
 
 void main()
 {
@@ -110,7 +110,7 @@ void main()
 	vec3 res1, res2, pix1, pix2;
 	float blend1, blend2;
 
-    vec2 fp = fract(texCoord * TextureSize);
+    vec2 fp = fract(texCoord * texSize);
 
     vec3 A1 = COMPAT_TEXTURE(tex, TEX1.xw).rgb;
     vec3 B1 = COMPAT_TEXTURE(tex, TEX1.yw).rgb;

res/shaders/xbr.shader/xbr.vs

@@ -34,12 +34,14 @@ varying vec4 TEX6;
 varying vec4 TEX7;
 attribute vec4 position;
 
+uniform vec2 texSize;
+
 /*    VERTEX_SHADER    */
 void main()
 {
 	gl_Position = position;
 
-	vec2 ps = vec2(1.0/240.0, 1.0/160.0);
+	vec2 ps = vec2(1.0) / texSize;
 	float dx = ps.x;
 	float dy = ps.y;
 

src/platform/opengl/gles2.c

@@ -230,6 +230,7 @@ void _drawShader(struct mGLES2Context* context, struct mGLES2Shader* shader) {
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, shader->filter ? GL_LINEAR : GL_NEAREST);
 	glUseProgram(shader->program);
 	glUniform1i(shader->texLocation, 0);
+	glUniform2f(shader->texSizeLocation, context->d.width, context->d.height);
 	glVertexAttribPointer(shader->positionLocation, 2, GL_FLOAT, GL_FALSE, 0, _vertices);
 	glEnableVertexAttribArray(shader->positionLocation);
 	size_t u;
@@ -399,6 +400,7 @@ void mGLES2ShaderInit(struct mGLES2Shader* shader, const char* vs, const char* f
 	}
 
 	shader->texLocation = glGetUniformLocation(shader->program, "tex");
+	shader->texSizeLocation = glGetUniformLocation(shader->program, "texSize");
 	shader->positionLocation = glGetAttribLocation(shader->program, "position");
 	size_t i;
 	for (i = 0; i < shader->nUniforms; ++i) {

src/platform/opengl/gles2.h

@@ -62,6 +62,7 @@ struct mGLES2Shader {
 	GLuint vertexShader;
 	GLuint program;
 	GLuint texLocation;
+	GLuint texSizeLocation;
 	GLuint positionLocation;
 
 	struct mGLES2Uniform* uniforms;