226 lines
7.5 KiB
C
226 lines
7.5 KiB
C
/* KallistiGL for KallistiOS ##version##
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libgl/gl-api.h
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Copyright (C) 2013-2014 Josh Pearson
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The functions defined in this header are for internal use by the API,
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and not for use externally.
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*/
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#ifndef GL_API_H
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#define GL_API_H
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#include "gl.h"
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typedef struct {
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GLfloat pos[3];
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GLfloat norm[3];
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} glVertex; /* Simple Vertex used for Dynamic Vertex Lighting */
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typedef struct {
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GLfloat u, v;
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} glTexCoord; /* Simple Texture Coordinate used for Multi-Texturing */
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typedef struct {
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GLfloat s, t, r, q;
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} glTexCoord4f; /* 3D Texture Coordinate */
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typedef struct {
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GLushort width;
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GLushort height;
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GLuint color; /* This is the PVR texture format */
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GLubyte env;
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GLubyte filter;
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GLubyte mip_map;
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GLubyte uv_clamp;
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GLuint index;
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GLvoid *data;
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} GL_TEXTURE_OBJECT; /* KOS Open GL Texture Object */
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typedef struct {
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GLuint texID;
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GLsizei index;
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GLvoid *data;
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GLvoid *link;
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} GL_FRAMEBUFFER_OBJECT; /* KOS Open GL Frame Buffer Object */
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typedef struct {
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pvr_poly_hdr_t hdr;
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pvr_vertex_t *src;
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GLuint count;
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} GL_MULTITEX_OBJECT;
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typedef GLushort uint16;
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typedef GLubyte uint8;
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/* Vertex Main Buffer Internal Functions */
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void _glKosVertexBufSwitchOP();
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void _glKosVertexBufSwitchTR();
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void *_glKosVertexBufAddress(unsigned char list);
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void *_glKosVertexBufPointer();
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void *_glKosTRVertexBufPointer();
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void _glKosVertexBufIncrement();
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void _glKosTRVertexBufIncrement();
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void _glKosVertexBufAdd(unsigned int count);
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void _glKosTRVertexBufAdd(unsigned int count);
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void _glKosVertexBufDecrement();
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void _glKosVertexBufReset();
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unsigned int _glKosVertexBufCount(unsigned char list);
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unsigned char _glKosList();
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void _glKosVertexBufCopy(void *src, void *dst, GLuint count);
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void _glKosResetEnabledTex();
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void *_glKosMultiUVBufAddress();
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void *_glKosMultiUVBufPointer();
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void _glKosMultiUVBufIncrement();
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void _glKosMultiUVBufAdd(GLuint count);
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void _glKosMultiUVBufReset();
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/* Vertex Clip Buffer Internal Functions */
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void *_glKosClipBufAddress();
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void *_glKosClipBufPointer();
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void _glKosClipBufIncrement();
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void _glKosClipBufReset();
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/* Vertex Array Buffer Internal Functions */
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void _glKosArrayBufIncrement();
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void _glKosArrayBufReset();
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glVertex *_glKosArrayBufAddr();
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glVertex *_glKosArrayBufPtr();
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/* Initialize the OpenGL PVR Pipeline */
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int _glKosInitPVR();
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unsigned char _glKosInitTextures();
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/* Compile the current Polygon Header for the PVR */
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void _glKosCompileHdr();
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void _glKosCompileHdrTx();
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void _glKosCompileHdrMTx();
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void _glKosCompileHdrT(GL_TEXTURE_OBJECT *tex);
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void _glKosCompileHdrMT(pvr_poly_hdr_t *dst, GL_TEXTURE_OBJECT *tex);
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/* Clipping Internal Functions */
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void _glKosTransformClipBuf(pvr_vertex_t *v, GLuint verts);
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unsigned int _glKosClipTriangleStrip(pvr_vertex_t *vin, pvr_vertex_t *vout, unsigned int vertices);
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unsigned int _glKosClipTriangles(pvr_vertex_t *vin, pvr_vertex_t *vout, unsigned int vertices);
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unsigned int _glKosClipQuads(pvr_vertex_t *vin, pvr_vertex_t *vout, unsigned int vertices);
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unsigned int _glKosClipTrianglesTransformed(pvr_vertex_t *src, float *w, pvr_vertex_t *dst, GLuint count);
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unsigned int _glKosClipQuadsTransformed(pvr_vertex_t *vin, float *w, pvr_vertex_t *vout, unsigned int vertices);
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unsigned int _glKosClipTriangleStripTransformed(pvr_vertex_t *src, float *w, pvr_vertex_t *dst, GLuint count);
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unsigned int _glKosClipTrianglesTransformedMT(pvr_vertex_t *src, float *w, pvr_vertex_t *dst,
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GLfloat *uvsrc, glTexCoord *uvdst, GLuint uv_src_stride, GLuint count);
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unsigned int _glKosClipTriangleStripTransformedMT(pvr_vertex_t *src, float *w, pvr_vertex_t *dst,
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GLfloat *uvsrc, glTexCoord *uvdst, GLuint uv_src_stride, GLuint count);
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unsigned int _glKosClipQuadsTransformedMT(pvr_vertex_t *src, float *w, pvr_vertex_t *dst,
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GLfloat *uvsrc, glTexCoord *uvdst, GLuint uv_src_stride, GLuint count);
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/* Lighting Internal Functions */
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void _glKosInitLighting();
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void _glKosEnableLight(const GLuint light);
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void _glKosDisableLight(const GLuint light);
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void _glKosSetEyePosition(GLfloat *position);
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void _glKosVertexComputeLighting(pvr_vertex_t *v, int verts);
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void _glKosVertexLight(glVertex *P, pvr_vertex_t *v);
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unsigned int _glKosVertexLightColor(glVertex *P);
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void _glKosVertexLights(glVertex *P, pvr_vertex_t *v, GLuint count);
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/* Vertex Position Submission Internal Functions */
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void _glKosVertex3ft(GLfloat x, GLfloat y, GLfloat z);
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void _glKosVertex3ftv(const GLfloat *xyz);
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void _glKosVertex3fc(GLfloat x, GLfloat y, GLfloat z);
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void _glKosVertex3fcv(const GLfloat *xyz);
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void _glKosVertex3fp(GLfloat x, GLfloat y, GLfloat z);
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void _glKosVertex3fpv(const GLfloat *xyz);
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void _glKosVertex3fl(GLfloat x, GLfloat y, GLfloat z);
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void _glKosVertex3flv(const GLfloat *xyz);
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void _glKosVertex3flc(GLfloat x, GLfloat y, GLfloat z);
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void _glKosVertex3flcv(const GLfloat *xyz);
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void _glKosVertex3fs(GLfloat x, GLfloat y, GLfloat z);
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void _glKosVertex3fsv(const GLfloat *xyz);
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/* Matrix Internal Functions */
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void _glKosInitMatrix();
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void _glKosMatrixLoadModelView();
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void _glKosMatrixLoadModelRot();
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void _glKosMatrixApplyScreenSpace();
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void _glKosMatrixApplyRender();
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void _glKosMatrixLoadRender();
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void _glKosMatrixLoadTexture();
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/* API Enabled Capabilities Internal Functions */
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GLubyte _glKosEnabledBlend();
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GLubyte _glKosEnabledTexture2D();
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GLubyte _glKosEnabledNearZClip();
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GLubyte _glKosEnabledLighting();
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GLubyte _glKosEnabledFog();
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GLubyte _glKosEnabledCulling();
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GLubyte _glKosEnabledScissorTest();
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GLubyte _glKosEnabledDepthTest();
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/* RGB Pixel Colorspace Internal Functions */
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uint16 __glKosAverageQuadPixelRGB565(uint16 p1, uint16 p2, uint16 p3, uint16 p4);
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uint16 __glKosAverageQuadPixelARGB1555(uint16 p1, uint16 p2, uint16 p3, uint16 p4);
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uint16 __glKosAverageQuadPixelARGB4444(uint16 p1, uint16 p2, uint16 p3, uint16 p4);
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uint16 __glKosAverageBiPixelRGB565(uint16 p1, uint16 p2);
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uint16 __glKosAverageBiPixelARGB1555(uint16 p1, uint16 p2);
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uint16 __glKosAverageBiPixelARGB4444(uint16 p1, uint16 p2);
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/* Render-To-Texture Functions */
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void _glKosInitFrameBuffers();
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/* Error Codes */
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void _glKosThrowError(GLenum error, char *functionName);
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void _glKosPrintError();
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GLubyte _glKosHasError();
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GLuint _glKosTextureWidth(GLuint index);
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GLuint _glKosTextureHeight(GLuint index);
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GLvoid *_glKosTextureData(GLuint index);
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/* Frame Buffer Object Internal Functions */
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GLsizei _glKosGetFBO();
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GLuint _glKosGetFBOWidth(GLsizei fbi);
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GLuint _glKosGetFBOHeight(GLsizei fbi);
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GLvoid *_glKosGetFBOData(GLsizei fbi);
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/* Internal State Cap Accessors */
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GLubyte _glKosEnabledDepthTest();
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GLubyte _glKosEnabledScissorTest();
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GLubyte _glKosEnabledCulling();
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GLubyte _glKosEnabledFog();
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GLubyte _glKosEnabledLighting();
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GLubyte _glKosEnabledNearZClip();
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GLubyte _glKosEnabledTexture2D();
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GLubyte _glKosEnabledBlend();
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GLuint _glKosBlendSrcFunc();
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GLuint _glKosBlendDstFunc();
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GLubyte _glKosCullFaceMode();
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GLubyte _glKosCullFaceFront();
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GLuint _glKosDepthFunc();
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GLubyte _glKosDepthMask();
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GLubyte _glKosIsLightEnabled(GLubyte light);
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GLubyte _glKosGetMaxLights();
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GLuint _glKosBoundTexID();
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GLuint _glKosVertexColor();
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GLubyte _glKosMaxTextureUnits();
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GLubyte _glKosEnabledTextureMatrix();
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GL_TEXTURE_OBJECT *_glKosBoundMultiTexObject();
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GLuint _glKosActiveTextureBoundTexID();
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void _glKosPushMultiTexObject(GL_TEXTURE_OBJECT *tex,
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pvr_vertex_t *src,
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GLuint count);
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static inline void _glKosVertexCopyPVR(const pvr_vertex_t *src, pvr_vertex_t *dst) {
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*dst = *src;
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}
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static inline void _glKosTexCoordCopy(const glTexCoord *src, glTexCoord *dst) {
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*dst = *src;
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}
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#endif
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