add vertex shaders

src/hardware/hw_main.c

@@ -317,6 +317,7 @@ static void HWR_RenderPlane(sector_t *sector, extrasubsector_t *xsub, boolean is
 	static UINT16 numAllocedPlaneVerts = 0;
 
 	(void)sector; ///@TODO remove shitty unused variable
+	(void)fogplane; ///@TODO remove shitty unused variable
 
 	// no convex poly were generated for this subsector
 	if (!xsub->planepoly)
@@ -5759,6 +5760,8 @@ static void HWR_RenderWall(wallVert3D   *wallVerts, FSurfaceInfo *pSurf, FBITFIE
 	FOutVector  *wv;
 	UINT8 alpha;
 
+	(void)fogwall; ///@TODO remove shitty unused variable
+
 	// transform
 	wv = trVerts;
 	// it sounds really stupid to do this conversion with the new T&L code

src/hardware/r_opengl/r_opengl.c

@@ -77,6 +77,8 @@ static GLint mag_filter = GL_LINEAR;
 static GLint anisotropic_filter = 0;
 static FTransform  md2_transform;
 
+const GLubyte *gl_version = NULL;
+const GLubyte *gl_renderer = NULL;
 const GLubyte *gl_extensions = NULL;
 
 //Hurdler: 04/10/2000: added for the kick ass coronas as Boris wanted;-)
@@ -552,6 +554,10 @@ static PFNglUniform2fv pglUniform2fv;
 static PFNglUniform3fv pglUniform3fv;
 static PFNglGetUniformLocation pglGetUniformLocation;
 
+//
+// Fragment shaders
+//
+
 // Macro to reduce boilerplate code
 #define GLSL_SHARED_FOG_FUNCTION \
 	"float fog(const float dist, const float density, const float globaldensity) {\n" \
@@ -652,6 +658,40 @@ static char *fragment_shaders[] = {
 	"}\0",
 };
 
+//
+// Vertex shaders
+//
+
+// Macro to reduce boilerplate code
+#define SHARED_VERTEX_SHADER \
+	"void main()\n" \
+	"{\n" \
+		"gl_Position = gl_ProjectionMatrix * gl_ModelViewMatrix * gl_Vertex;\n" \
+		"gl_FrontColor = gl_Color;\n" \
+		"gl_TexCoord[0].xy = gl_MultiTexCoord0.xy;\n" \
+		"gl_ClipVertex = gl_ModelViewMatrix*gl_Vertex;\n" \
+	"}\0"
+
+static char *vertex_shaders[] = {
+	// Default shader
+	SHARED_VERTEX_SHADER,
+
+	// Floor shader
+	SHARED_VERTEX_SHADER,
+
+	// Wall shader
+	SHARED_VERTEX_SHADER,
+
+	// Sprite shader
+	SHARED_VERTEX_SHADER,
+
+	// Water shader
+	SHARED_VERTEX_SHADER,
+
+	// Sky shader
+	SHARED_VERTEX_SHADER,
+};
+
 #endif	// USE_SHADERS
 
 void SetupGLFunc4(void)
@@ -695,20 +735,39 @@ void SetupGLFunc4(void)
 EXPORT void HWRAPI(LoadShaders) (void)
 {
 #ifdef USE_SHADERS
-	GLuint gl_fragShader;
+	GLuint gl_vertShader, gl_fragShader;
 	GLint i, result;
 
-	for (i = 0; fragment_shaders[i]; i++)
+	for (i = 0; vertex_shaders[i] && fragment_shaders[i]; i++)
 	{
-		GLchar* shader = fragment_shaders[i];
+		GLchar* vert_shader = vertex_shaders[i];
+		GLchar* frag_shader = fragment_shaders[i];
 		if (i >= MAXSHADERS || i >= MAXSHADERPROGRAMS)
 			break;
 
+		//
+		// Load and compile vertex shader
+		//
+		gl_vertShader = gl_shaders[gl_totalshaders++] = pglCreateShader(GL_VERTEX_SHADER);
+		if (!gl_vertShader)
+			I_Error("Hardware driver: Error creating vertex shader %d", i);
+
+		pglShaderSource(gl_vertShader, 1, &vert_shader, NULL);
+		pglCompileShader(gl_vertShader);
+
+		// check for compile errors
+		pglGetShaderiv(gl_vertShader, GL_COMPILE_STATUS, &result);
+		if (result == GL_FALSE)
+			I_Error("Hardware driver: Error compiling vertex shader %d", i);
+
+		//
+		// Load and compile fragment shader
+		//
 		gl_fragShader = gl_shaders[gl_totalshaders++] = pglCreateShader(GL_FRAGMENT_SHADER);
 		if (!gl_fragShader)
 			I_Error("Hardware driver: Error creating fragment shader %d", i);
 
-		pglShaderSource(gl_fragShader, 1, &shader, NULL);
+		pglShaderSource(gl_fragShader, 1, &frag_shader, NULL);
 		pglCompileShader(gl_fragShader);
 
 		// check for compile errors
@@ -717,6 +776,7 @@ EXPORT void HWRAPI(LoadShaders) (void)
 			I_Error("Hardware driver: Error compiling fragment shader %d", i);
 
 		gl_shaderprograms[i] = pglCreateProgram();
+		pglAttachShader(gl_shaderprograms[i], gl_vertShader);
 		pglAttachShader(gl_shaderprograms[i], gl_fragShader);
 		pglLinkProgram(gl_shaderprograms[i]);
 
@@ -1863,6 +1923,12 @@ EXPORT void HWRAPI(CreateModelVBOs) (model_t *model)
 }
 
 // Macro to
+
+// Macro to what? Why isn't this comment finished?
+// Did I accidentally delete the rest of the line?
+// Did it decide it didn't want to be part of the code anymore?
+// Did the macro hurt its feelings?
+
 #define BUFFER_OFFSET(i) ((void*)(i))
 
 static void DrawModelEx(model_t *model, INT32 frameIndex, INT32 duration, INT32 tics, INT32 nextFrameIndex, FTransform *pos, float scale, UINT8 flipped, FSurfaceInfo *Surface)

src/hardware/r_opengl/r_opengl.h

@@ -109,7 +109,10 @@ extern PFNglGetString pglGetString;
 //                                                                     GLOBAL
 // ==========================================================================
 
+extern const GLubyte	*gl_version;
+extern const GLubyte	*gl_renderer;
 extern const GLubyte	*gl_extensions;
+
 extern RGBA_t			myPaletteData[];
 extern GLint			screen_width;
 extern GLint			screen_height;

src/sdl/ogl_sdl.c

@@ -152,18 +152,18 @@ boolean LoadGL(void)
 boolean OglSdlSurface(INT32 w, INT32 h)
 {
 	INT32 cbpp = cv_scr_depth.value < 16 ? 16 : cv_scr_depth.value;
-	const GLvoid *gl_version = NULL, *gl_renderer = NULL;
 	static boolean first_init = false;
 
-	gl_version = pglGetString(GL_VERSION);
-	gl_renderer = pglGetString(GL_RENDERER);
-	gl_extensions = pglGetString(GL_EXTENSIONS);
 	oglflags = 0;
 
 	if (!first_init)
 	{
-		GL_DBG_Printf("OpenGL %s\n", (char *)gl_version);
+		gl_version = pglGetString(GL_VERSION);
-		GL_DBG_Printf("GPU: %s\n", (char *)gl_renderer);
+		gl_renderer = pglGetString(GL_RENDERER);
+		gl_extensions = pglGetString(GL_EXTENSIONS);
+
+		GL_DBG_Printf("OpenGL %s\n", gl_version);
+		GL_DBG_Printf("GPU: %s\n", gl_renderer);
 		GL_DBG_Printf("Extensions: %s\n", gl_extensions);
 	}
 	first_init = true;