- use explicit vertex attributes for everything.

No more glVertex, glTexCoord or glColor calls anywhere.

source/glbackend/gl_shader.cpp

@@ -71,10 +71,9 @@ bool FShader::Load(const char * name, const char * vert_prog, const char * frag_
 	glAttachShader(hShader, hVertProg);
 	glAttachShader(hShader, hFragProg);
 
-	//glBindAttribLocation(hShader, VATTR_VERTEX, "aPosition");
-	//glBindAttribLocation(hShader, VATTR_TEXCOORD, "aTexCoord");
-	//glBindAttribLocation(hShader, VATTR_COLOR, "aColor");
-	//glBindAttribLocation(hShader, VATTR_VERTEX2, "aVertex2");
+	glBindAttribLocation(hShader, 0, "i_vertPos");
+	glBindAttribLocation(hShader, 1, "i_texCoord");
+	glBindAttribLocation(hShader, 2, "i_color");
 
 	glLinkProgram(hShader);
 
@@ -200,10 +199,7 @@ bool SurfaceShader::Load(const char* name, const char* vert_prog, const char* fr
 	glUniform1i(SamplerLoc, 0);
 	SamplerLoc = glGetUniformLocation(hShader, "s_palette");
 	glUniform1i(SamplerLoc, 1);
-
-	glBindAttribLocation(hShader, 0, "i_vertPos");
-	glBindAttribLocation(hShader, 1, "i_texCoord");
-
+	
 	glUseProgram(0);
 	return true;
 }

source/glbackend/glbackend.cpp

@@ -172,8 +172,8 @@ void GLInstance::Draw(EDrawType type, size_t start, size_t count)
 	auto p = &Buffer[start];
 	for (size_t i = 0; i < count; i++, p++)
 	{
-		glTexCoord2f(p->u, p->v);
-		glVertex3f(p->x, p->y, p->z);
+		glVertexAttrib2f(1, p->u, p->v);
+		glVertexAttrib3f(0, p->x, p->y, p->z);
 	}
 	glEnd();
 }
@@ -315,7 +315,7 @@ void GLInstance::SetCull(int type, int winding)
 
 void GLInstance::SetColor(float r, float g, float b, float a)
 {
-	glColor4f(r, g, b, a);
+	glVertexAttrib4f(2, r, g, b, a);
 }
 
 void GLInstance::SetDepthFunc(int func)

wadsrc/static/demolition/shaders/glsl/animvpx.fp

@@ -1,16 +1,18 @@
 // YUV->RGB conversion fragment shader adapted from
 // http://www.fourcc.org/fccyvrgb.php: Want some sample code?
 // direct link: http://www.fourcc.org/source/YUV420P-OpenGL-GLSLang.c
-#version 120
+#version 330
 
 uniform sampler2D tex;
+in vec2 v_texCoord;
+out vec4 FragColor;
 
 void main(void) {
 
   float r,g,b,y,u,v;
   vec3 yuv;
 
-  yuv = texture2D(tex, gl_TexCoord[0].st).rgb;
+  yuv = texture2D(tex, v_texCoord.st).rgb;
   y = yuv.r;
   u = yuv.g;
   v = yuv.b;
@@ -23,5 +25,5 @@ void main(void) {
   g = y - 0.39173*u - 0.81290*v;
   b = y + 2.017*u;
 
-  gl_FragColor = vec4(r,g,b,1.0);
+  FragColor = vec4(r,g,b,1.0);
 };

wadsrc/static/demolition/shaders/glsl/animvpx.vp

@@ -1,7 +1,13 @@
-#version 110
+#version 330
+ 
+in vec4 i_vertPos;
+in vec4 i_texCoord;
+
+out vec2 v_texCoord;
 
 void main()
 {
-   gl_Position = gl_Vertex;
-   gl_TexCoord[0] = gl_MultiTexCoord0;
+ gl_Position = i_vertPos;
+ v_texCoord = i_texCoord.st;
 }
+

wadsrc/static/demolition/shaders/glsl/glsurface.fp

@@ -6,6 +6,7 @@ uniform sampler2D s_texture;
 uniform sampler2D s_palette;
 
 in vec2 v_texCoord;
+out vec4 FragColor;
 
 const float c_paletteScale = 255.0/256.0;
 const float c_paletteOffset = 0.5/256.0;
@@ -16,5 +17,5 @@ void main()
  color.r = c_paletteOffset + c_paletteScale*color.r;
  color.rgb = texture2D(s_palette, color.rg).rgb;
  
- gl_FragColor = color;
+ FragColor = color;
 }

wadsrc/static/demolition/shaders/glsl/glsurface.vp

@@ -1,13 +1,13 @@
 #version 330
  
-attribute vec4 i_vertPos;
-attribute vec2 i_texCoord;
+in vec4 i_vertPos;
+in vec4 i_texCoord;
 
 out vec2 v_texCoord;
 
 void main()
 {
  gl_Position = i_vertPos;
- v_texCoord = i_texCoord;
+ v_texCoord = i_texCoord.st;
 }
 

wadsrc/static/demolition/shaders/glsl/polymost.vp

@@ -1,11 +1,11 @@
-#version 120
+#version 330
 
-varying vec4 v_color;
-varying float v_distance;
-varying vec4 v_texCoord;
-varying vec4 v_detailCoord;
-varying vec4 v_glowCoord;
-varying float v_fogCoord;
+out vec4 v_color;
+out float v_distance;
+out vec4 v_texCoord;
+out vec4 v_detailCoord;
+out vec4 v_glowCoord;
+out float v_fogCoord;
 
 uniform float u_usePalette;
 uniform mat4 u_rotMatrix;
@@ -14,25 +14,30 @@ uniform mat4 u_projectionMatrix;
 uniform mat4 u_detailMatrix;
 uniform mat4 u_glowMatrix;
 
+in vec4 i_vertPos;
+in vec4 i_texCoord;
+in vec4 i_color;
+
+
 const float c_zero = 0.0;
 const float c_one  = 1.0;
 
 void main()
 {
-   vec4 vertex = u_rotMatrix * gl_Vertex;
+   vec4 vertex = u_rotMatrix * i_vertPos;
    vec4 eyeCoordPosition = u_modelMatrix * vertex;
    gl_Position = u_projectionMatrix * eyeCoordPosition;
 
    eyeCoordPosition.xyz /= eyeCoordPosition.w;
 
-   v_texCoord = gl_MultiTexCoord0;
+   v_texCoord = i_texCoord;
    //gl_TexCoord[0] = mix(gl_TexCoord[0].xyzw, gl_TexCoord[0].yxzw, u_usePalette); WTF is this???
 
-   v_detailCoord = u_detailMatrix * gl_MultiTexCoord0;
-   v_glowCoord = u_glowMatrix * gl_MultiTexCoord0;
+   v_detailCoord = u_detailMatrix * i_texCoord;
+   v_glowCoord = u_glowMatrix * i_texCoord;
 
    v_fogCoord = abs(eyeCoordPosition.z);
 
-   v_color = gl_Color;
-   v_distance = gl_Vertex.z;
+   v_color = i_color;
+   v_distance = i_vertPos.z;
 }