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1#ifndef _SDL_GPU_GLES_1_H__
2#define _SDL_GPU_GLES_1_H__
3
4#include "SDL_gpu.h"
5#include "SDL_platform.h"
6
7#if !defined(SDL_GPU_DISABLE_GLES) && !defined(SDL_GPU_DISABLE_GLES_1)
8
9#ifdef __IPHONEOS__
10 #include <OpenGLES/ES1/gl.h>
11 #include <OpenGLES/ES1/glext.h>
12#else
13 #include "GLES/gl.h"
14 #include "GLES/glext.h"
15#endif
16
17 #define glFrustum glFrustumf
18 #define glOrtho glOrthof
19 #define glGenerateMipmap glGenerateMipmapOES
20 #define glDeleteFramebuffers glDeleteFramebuffersOES
21 #define glGenFramebuffers glGenFramebuffersOES
22 #define glFramebufferTexture2D glFramebufferTexture2DOES
23 #define glCheckFramebufferStatus glCheckFramebufferStatusOES
24 #define glBindFramebuffer glBindFramebufferOES
25 #define GL_FRAMEBUFFER GL_FRAMEBUFFER_OES
26 #define GL_FRAMEBUFFER_BINDING GL_FRAMEBUFFER_BINDING_OES
27 #define GL_COLOR_ATTACHMENT0 GL_COLOR_ATTACHMENT0_OES
28 #define GL_FRAMEBUFFER_COMPLETE GL_FRAMEBUFFER_COMPLETE_OES
29
30/* It looks like on Raspberry Pi 2/Raspbian, the
31 symbols in library are missing the OES suffix,
32 even though the headers seem to be named right.
33*/
34#ifdef ADD_MISSING_OES_FUNCTIONS
35 extern void glBlendEquation(GLenum mode);
36 extern void glBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);
37 extern void glBlendFuncSeparate(GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
38#else
39 #define glBlendEquation glBlendEquationOES
40 #define glBlendEquationSeparate glBlendEquationSeparateOES
41 #define glBlendFuncSeparate glBlendFuncSeparateOES
42#endif
43
44 #define GL_FUNC_ADD GL_FUNC_ADD_OES
45 #define GL_FUNC_SUBTRACT GL_FUNC_SUBTRACT_OES
46 #define GL_FUNC_REVERSE_SUBTRACT GL_FUNC_REVERSE_SUBTRACT_OES
47
48 #define GL_MIRRORED_REPEAT GL_MIRRORED_REPEAT_OES
49
50#endif
51
52
53#define GPU_CONTEXT_DATA ContextData_GLES_1
54#define GPU_IMAGE_DATA ImageData_GLES_1
55#define GPU_TARGET_DATA TargetData_GLES_1
56
57
58
59typedef struct ContextData_GLES_1
60{
61 SDL_Color last_color;
62 GPU_bool last_use_texturing;
63 unsigned int last_shape;
64 GPU_bool last_use_blending;
65 GPU_BlendMode last_blend_mode;
66 GPU_Rect last_viewport;
67 GPU_Camera last_camera;
68 GPU_bool last_camera_inverted;
69
70 GPU_bool last_depth_test;
71 GPU_bool last_depth_write;
72 GPU_ComparisonEnum last_depth_function;
73
74 GPU_Image* last_image;
75 float* blit_buffer; // Holds sets of 4 vertices and 4 tex coords interleaved (e.g. [x0, y0, z0, s0, t0, ...]).
76 unsigned short blit_buffer_num_vertices;
77 unsigned short blit_buffer_max_num_vertices;
78 unsigned short* index_buffer; // Indexes into the blit buffer so we can use 4 vertices for every 2 triangles (1 quad)
79 unsigned int index_buffer_num_vertices;
80 unsigned int index_buffer_max_num_vertices;
81} ContextData_GLES_1;
82
83typedef struct ImageData_GLES_1
84{
85 int refcount;
86 GPU_bool owns_handle;
87 Uint32 handle;
88 Uint32 format;
89} ImageData_GLES_1;
90
91typedef struct TargetData_GLES_1
92{
93 int refcount;
94 Uint32 handle;
95 Uint32 format;
96} TargetData_GLES_1;
97
98
99
100#endif