shl: move static_gl_* to shl_gl_*

No need to keep these static helpers outside of SHL. Instead, include them
in SHL to avoid any external linking.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/shl_gl.h b/src/shl_gl.h
new file mode 100644
index 0000000..ccff76b
--- /dev/null
+++ b/src/shl_gl.h
@@ -0,0 +1,91 @@
+/*
+ * shl - OpenGL Helpers
+ *
+ * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * OpenGL Helpers
+ * This file provides several helper functions that are commonly used when
+ * working with OpenGL.
+ * TODO: Rename to shl_gl_* prefix.
+ */
+
+#ifndef SHL_GL_H
+#define SHL_GL_H
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include "shl_llog.h"
+
+/*
+ * Math Helpers
+ * The gl_m4 type is a 4x4 matrix of floats. The gl_m4_stack is a stack of m4
+ * matrices where you can only access the top-most member.
+ */
+
+struct gl_m4_stack;
+
+void gl_m4_identity(float *m);
+void gl_m4_copy(float *dest, const float *src);
+void gl_m4_mult_dest(float *dest, const float *n, const float *m);
+void gl_m4_mult(float *n, const float *m);
+void gl_m4_translate(float *m, float x, float y, float z);
+void gl_m4_scale(float *m, float x, float y, float z);
+void gl_m4_transpose_dest(float *dest, const float *src);
+void gl_m4_transpose(float *m);
+
+int gl_m4_stack_new(struct gl_m4_stack **out);
+void gl_m4_stack_free(struct gl_m4_stack *stack);
+float *gl_m4_stack_push(struct gl_m4_stack *stack);
+float *gl_m4_stack_pop(struct gl_m4_stack *stack);
+float *gl_m4_stack_tip(struct gl_m4_stack *stack);
+
+/*
+ * Shader Helpers
+ * These helpers load, compile and link shaders and allow easy attribute/uniform
+ * access.
+ */
+
+struct gl_shader;
+
+int gl_shader_new(struct gl_shader **out, const char *vert, const char *frag,
+		  char **attr, size_t attr_count, llog_submit_t llog,
+		  void *llog_data);
+void gl_shader_ref(struct gl_shader *shader);
+void gl_shader_unref(struct gl_shader *shader);
+GLuint gl_shader_get_uniform(struct gl_shader *shader, const char *name);
+void gl_shader_use(struct gl_shader *shader);
+
+void gl_tex_new(GLuint *tex, size_t num);
+void gl_tex_free(GLuint *tex, size_t num);
+void gl_tex_load(GLuint tex, unsigned int width, unsigned int stride,
+		 unsigned int height, uint8_t *buf);
+
+void gl_clear_error();
+bool gl_has_error(struct gl_shader *shader);
+const char *gl_err_to_str(GLenum err);
+
+#endif /* SHL_GL_H */