Import aap/librw @ masterHEADmaster

Snapshot for re3/reVC vendoring, per @lzcnt.
Source: https://github.com/aap/librw (master).

1 files changed, 69 insertions, 0 deletions

diff --git a/src/gl/rwgl3shader.h b/src/gl/rwgl3shader.h
new file mode 100644
index 0000000..890f12b
--- /dev/null
+++ b/src/gl/rwgl3shader.h
@@ -0,0 +1,69 @@
+#ifdef RW_OPENGL
+
+namespace rw {
+namespace gl3 {
+
+// TODO: make this dynamic
+enum {
+	MAX_UNIFORMS = 40,
+	MAX_BLOCKS = 20
+};
+
+enum UniformType
+{
+	UNIFORM_NA,	// managed by the user
+	UNIFORM_VEC4,
+	UNIFORM_IVEC4,
+	UNIFORM_MAT4
+};
+
+struct Uniform
+{
+	char *name;
+	UniformType type;
+	//bool dirty;
+	uint32 serialNum;
+	int32 num;
+	void *data;
+};
+
+struct UniformRegistry
+{
+	int32 numUniforms;
+	Uniform uniforms[MAX_UNIFORMS];
+
+	int32 numBlocks;
+	char *blockNames[MAX_BLOCKS];
+};
+
+int32 registerUniform(const char *name, UniformType type = UNIFORM_NA, int32 num = 1);
+int32 findUniform(const char *name);
+int32 registerBlock(const char *name);
+int32 findBlock(const char *name);
+
+void setUniform(int32 id, void *data);
+void flushUniforms(void);
+
+extern UniformRegistry uniformRegistry;
+
+struct Shader
+{
+	GLuint program;
+	// same number of elements as UniformRegistry::numUniforms
+	GLint *uniformLocations;
+	uint32 *serialNums;
+	int32 numUniforms;	// just to be sure!
+
+	static Shader *create(const char **vsrc, const char **fsrc);
+//	static Shader *fromFiles(const char *vs, const char *fs);
+//	static Shader *fromStrings(const char *vsrc, const char *fsrc);
+	void use(void);
+	void destroy(void);
+};
+
+extern Shader *currentShader;
+
+}
+}
+
+#endif