michael@0: /*
michael@0:  * Copyright (C) 2007 The Android Open Source Project
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #ifndef ANDROID_PIXELFLINGER_H
michael@0: #define ANDROID_PIXELFLINGER_H
michael@0: 
michael@0: #include <stdint.h>
michael@0: #include <sys/types.h>
michael@0: 
michael@0: #include <pixelflinger/format.h>
michael@0: 
michael@0: // GGL types
michael@0: 
michael@0: typedef int8_t			GGLbyte;		// b
michael@0: typedef int16_t			GGLshort;		// s
michael@0: typedef int32_t			GGLint;			// i
michael@0: typedef ssize_t			GGLsizei;		// i
michael@0: typedef int32_t			GGLfixed;		// x
michael@0: typedef int32_t			GGLclampx;		// x
michael@0: typedef float			GGLfloat;		// f
michael@0: typedef float			GGLclampf;		// f
michael@0: typedef double			GGLdouble;		// d
michael@0: typedef double			GGLclampd;		// d
michael@0: typedef uint8_t			GGLubyte;		// ub
michael@0: typedef uint8_t			GGLboolean;		// ub
michael@0: typedef uint16_t		GGLushort;		// us
michael@0: typedef uint32_t		GGLuint;		// ui
michael@0: typedef unsigned int	GGLenum;		// ui
michael@0: typedef unsigned int	GGLbitfield;	// ui
michael@0: typedef void			GGLvoid;
michael@0: typedef int32_t         GGLfixed32;
michael@0: typedef	int32_t         GGLcolor;
michael@0: typedef int32_t         GGLcoord;
michael@0: 
michael@0: // ----------------------------------------------------------------------------
michael@0: 
michael@0: #define GGL_MAX_VIEWPORT_DIMS           4096
michael@0: #define GGL_MAX_TEXTURE_SIZE            4096
michael@0: #define GGL_MAX_ALIASED_POINT_SIZE      0x7FFFFFF
michael@0: #define GGL_MAX_SMOOTH_POINT_SIZE       2048
michael@0: #define GGL_MAX_SMOOTH_LINE_WIDTH       2048
michael@0: 
michael@0: // ----------------------------------------------------------------------------
michael@0: 
michael@0: // All these names are compatible with their OpenGL equivalents
michael@0: // some of them are listed only for completeness
michael@0: enum GGLNames {
michael@0: 	GGL_FALSE						= 0,
michael@0: 	GGL_TRUE						= 1,
michael@0: 
michael@0: 	// enable/disable
michael@0:     GGL_SCISSOR_TEST                = 0x0C11,
michael@0: 	GGL_TEXTURE_2D					= 0x0DE1,
michael@0: 	GGL_ALPHA_TEST					= 0x0BC0,
michael@0: 	GGL_BLEND						= 0x0BE2,
michael@0: 	GGL_COLOR_LOGIC_OP				= 0x0BF2,
michael@0: 	GGL_DITHER						= 0x0BD0,
michael@0: 	GGL_STENCIL_TEST				= 0x0B90,
michael@0: 	GGL_DEPTH_TEST					= 0x0B71,
michael@0:     GGL_AA                          = 0x80000001,
michael@0:     GGL_W_LERP                      = 0x80000004,
michael@0:     GGL_POINT_SMOOTH_NICE           = 0x80000005,
michael@0: 
michael@0:     // buffers, pixel drawing/reading
michael@0:     GGL_COLOR                       = 0x1800,
michael@0:     
michael@0:     // fog
michael@0:     GGL_FOG                         = 0x0B60,
michael@0:     
michael@0: 	// shade model
michael@0: 	GGL_FLAT						= 0x1D00,
michael@0: 	GGL_SMOOTH						= 0x1D01,
michael@0: 
michael@0: 	// Texture parameter name
michael@0: 	GGL_TEXTURE_MIN_FILTER			= 0x2801,
michael@0: 	GGL_TEXTURE_MAG_FILTER			= 0x2800,
michael@0: 	GGL_TEXTURE_WRAP_S				= 0x2802,
michael@0: 	GGL_TEXTURE_WRAP_T				= 0x2803,
michael@0: 	GGL_TEXTURE_WRAP_R				= 0x2804,
michael@0: 
michael@0: 	// Texture Filter	
michael@0: 	GGL_NEAREST						= 0x2600,
michael@0: 	GGL_LINEAR						= 0x2601,
michael@0: 	GGL_NEAREST_MIPMAP_NEAREST		= 0x2700,
michael@0: 	GGL_LINEAR_MIPMAP_NEAREST		= 0x2701,
michael@0: 	GGL_NEAREST_MIPMAP_LINEAR		= 0x2702,
michael@0: 	GGL_LINEAR_MIPMAP_LINEAR		= 0x2703,
michael@0: 
michael@0: 	// Texture Wrap Mode
michael@0: 	GGL_CLAMP						= 0x2900,
michael@0: 	GGL_REPEAT						= 0x2901,
michael@0:     GGL_CLAMP_TO_EDGE               = 0x812F,
michael@0: 
michael@0: 	// Texture Env Mode
michael@0: 	GGL_REPLACE						= 0x1E01,
michael@0: 	GGL_MODULATE					= 0x2100,
michael@0: 	GGL_DECAL						= 0x2101,
michael@0: 	GGL_ADD							= 0x0104,
michael@0: 
michael@0: 	// Texture Env Parameter
michael@0: 	GGL_TEXTURE_ENV_MODE			= 0x2200,
michael@0: 	GGL_TEXTURE_ENV_COLOR			= 0x2201,
michael@0: 
michael@0: 	// Texture Env Target
michael@0: 	GGL_TEXTURE_ENV					= 0x2300,
michael@0: 
michael@0:     // Texture coord generation
michael@0:     GGL_TEXTURE_GEN_MODE            = 0x2500,
michael@0:     GGL_S                           = 0x2000,
michael@0:     GGL_T                           = 0x2001,
michael@0:     GGL_R                           = 0x2002,
michael@0:     GGL_Q                           = 0x2003,
michael@0:     GGL_ONE_TO_ONE                  = 0x80000002,
michael@0:     GGL_AUTOMATIC                   = 0x80000003,
michael@0: 
michael@0:     // AlphaFunction
michael@0:     GGL_NEVER                       = 0x0200,
michael@0:     GGL_LESS                        = 0x0201,
michael@0:     GGL_EQUAL                       = 0x0202,
michael@0:     GGL_LEQUAL                      = 0x0203,
michael@0:     GGL_GREATER                     = 0x0204,
michael@0:     GGL_NOTEQUAL                    = 0x0205,
michael@0:     GGL_GEQUAL                      = 0x0206,
michael@0:     GGL_ALWAYS                      = 0x0207,
michael@0: 
michael@0:     // LogicOp
michael@0:     GGL_CLEAR                       = 0x1500,   // 0
michael@0:     GGL_AND                         = 0x1501,   // s & d
michael@0:     GGL_AND_REVERSE                 = 0x1502,   // s & ~d
michael@0:     GGL_COPY                        = 0x1503,   // s
michael@0:     GGL_AND_INVERTED                = 0x1504,   // ~s & d
michael@0:     GGL_NOOP                        = 0x1505,   // d
michael@0:     GGL_XOR                         = 0x1506,   // s ^ d
michael@0:     GGL_OR                          = 0x1507,   // s | d
michael@0:     GGL_NOR                         = 0x1508,   // ~(s | d)
michael@0:     GGL_EQUIV                       = 0x1509,   // ~(s ^ d)
michael@0:     GGL_INVERT                      = 0x150A,   // ~d
michael@0:     GGL_OR_REVERSE                  = 0x150B,   // s | ~d
michael@0:     GGL_COPY_INVERTED               = 0x150C,   // ~s 
michael@0:     GGL_OR_INVERTED                 = 0x150D,   // ~s | d
michael@0:     GGL_NAND                        = 0x150E,   // ~(s & d)
michael@0:     GGL_SET                         = 0x150F,   // 1
michael@0: 
michael@0: 	// blending equation & function
michael@0: 	GGL_ZERO                        = 0,		// SD
michael@0: 	GGL_ONE                         = 1,		// SD
michael@0: 	GGL_SRC_COLOR                   = 0x0300,	//  D
michael@0: 	GGL_ONE_MINUS_SRC_COLOR         = 0x0301,	//	D
michael@0: 	GGL_SRC_ALPHA                   = 0x0302,	// SD
michael@0: 	GGL_ONE_MINUS_SRC_ALPHA			= 0x0303,	// SD
michael@0: 	GGL_DST_ALPHA					= 0x0304,	// SD
michael@0: 	GGL_ONE_MINUS_DST_ALPHA			= 0x0305,	// SD
michael@0: 	GGL_DST_COLOR					= 0x0306,	// S
michael@0: 	GGL_ONE_MINUS_DST_COLOR			= 0x0307,	// S
michael@0: 	GGL_SRC_ALPHA_SATURATE			= 0x0308,	// S
michael@0:     
michael@0:     // clear bits
michael@0:     GGL_DEPTH_BUFFER_BIT            = 0x00000100,
michael@0:     GGL_STENCIL_BUFFER_BIT          = 0x00000400,
michael@0:     GGL_COLOR_BUFFER_BIT            = 0x00004000,
michael@0: 
michael@0:     // errors
michael@0:     GGL_NO_ERROR                    = 0,
michael@0:     GGL_INVALID_ENUM                = 0x0500,
michael@0:     GGL_INVALID_VALUE               = 0x0501,
michael@0:     GGL_INVALID_OPERATION           = 0x0502,
michael@0:     GGL_STACK_OVERFLOW              = 0x0503,
michael@0:     GGL_STACK_UNDERFLOW             = 0x0504,
michael@0:     GGL_OUT_OF_MEMORY               = 0x0505
michael@0: };
michael@0: 
michael@0: // ----------------------------------------------------------------------------
michael@0: 
michael@0: typedef struct {
michael@0:     GGLsizei    version;    // always set to sizeof(GGLSurface)
michael@0:     GGLuint     width;      // width in pixels
michael@0:     GGLuint     height;     // height in pixels
michael@0:     GGLint      stride;     // stride in pixels
michael@0:     GGLubyte*   data;       // pointer to the bits
michael@0:     GGLubyte    format;     // pixel format
michael@0:     GGLubyte    rfu[3];     // must be zero
michael@0:     // these values are dependent on the used format
michael@0:     union {
michael@0:         GGLint  compressedFormat;
michael@0:         GGLint  vstride;
michael@0:     };
michael@0:     void*       reserved;
michael@0: } GGLSurface;
michael@0: 
michael@0: 
michael@0: typedef struct {
michael@0:     // immediate rendering
michael@0:     void (*pointx)(void *con, const GGLcoord* v, GGLcoord r);
michael@0:     void (*linex)(void *con, 
michael@0:             const GGLcoord* v0, const GGLcoord* v1, GGLcoord width);
michael@0:     void (*recti)(void* c, GGLint l, GGLint t, GGLint r, GGLint b); 
michael@0:     void (*trianglex)(void* c,
michael@0:             GGLcoord const* v0, GGLcoord const* v1, GGLcoord const* v2);
michael@0: 
michael@0:     // scissor
michael@0:     void (*scissor)(void* c, GGLint x, GGLint y, GGLsizei width, GGLsizei height);
michael@0: 
michael@0:     // Set the textures and color buffers
michael@0:     void (*activeTexture)(void* c, GGLuint tmu);
michael@0:     void (*bindTexture)(void* c, const GGLSurface* surface);
michael@0:     void (*colorBuffer)(void* c, const GGLSurface* surface);
michael@0:     void (*readBuffer)(void* c, const GGLSurface* surface);
michael@0:     void (*depthBuffer)(void* c, const GGLSurface* surface);
michael@0:     void (*bindTextureLod)(void* c, GGLuint tmu, const GGLSurface* surface);
michael@0: 
michael@0:     // enable/disable features
michael@0:     void (*enable)(void* c, GGLenum name);
michael@0:     void (*disable)(void* c, GGLenum name);
michael@0:     void (*enableDisable)(void* c, GGLenum name, GGLboolean en);
michael@0: 
michael@0:     // specify the fragment's color
michael@0:     void (*shadeModel)(void* c, GGLenum mode);
michael@0:     void (*color4xv)(void* c, const GGLclampx* color);
michael@0:     // specify color iterators (16.16)
michael@0:     void (*colorGrad12xv)(void* c, const GGLcolor* grad);
michael@0: 
michael@0:     // specify Z coordinate iterators (0.32)
michael@0:     void (*zGrad3xv)(void* c, const GGLfixed32* grad);
michael@0: 
michael@0:     // specify W coordinate iterators (16.16)
michael@0:     void (*wGrad3xv)(void* c, const GGLfixed* grad);
michael@0: 
michael@0:     // specify fog iterator & color (16.16)
michael@0:     void (*fogGrad3xv)(void* c, const GGLfixed* grad);
michael@0:     void (*fogColor3xv)(void* c, const GGLclampx* color);
michael@0: 
michael@0:     // specify blending parameters
michael@0:     void (*blendFunc)(void* c, GGLenum src, GGLenum dst);
michael@0:     void (*blendFuncSeparate)(void* c,  GGLenum src, GGLenum dst,
michael@0:                                         GGLenum srcAlpha, GGLenum dstAplha);
michael@0: 
michael@0:     // texture environnement (REPLACE / MODULATE / DECAL / BLEND)
michael@0:     void (*texEnvi)(void* c,    GGLenum target,
michael@0:                                 GGLenum pname,
michael@0:                                 GGLint param);
michael@0: 
michael@0:     void (*texEnvxv)(void* c, GGLenum target,
michael@0:             GGLenum pname, const GGLfixed* params);
michael@0: 
michael@0:     // texture parameters (Wrapping, filter)
michael@0:     void (*texParameteri)(void* c,  GGLenum target,
michael@0:                                     GGLenum pname,
michael@0:                                     GGLint param);
michael@0: 
michael@0:     // texture iterators (16.16)
michael@0:     void (*texCoord2i)(void* c, GGLint s, GGLint t);
michael@0:     void (*texCoord2x)(void* c, GGLfixed s, GGLfixed t);
michael@0:     
michael@0:     // s, dsdx, dsdy, scale, t, dtdx, dtdy, tscale
michael@0:     // This api uses block floating-point for S and T texture coordinates.
michael@0:     // All values are given in 16.16, scaled by 'scale'. In other words,
michael@0:     // set scale to 0, for 16.16 values.
michael@0:     void (*texCoordGradScale8xv)(void* c, GGLint tmu, const int32_t* grad8);
michael@0:     
michael@0:     void (*texGeni)(void* c, GGLenum coord, GGLenum pname, GGLint param);
michael@0: 
michael@0:     // masking
michael@0:     void (*colorMask)(void* c,  GGLboolean red,
michael@0:                                 GGLboolean green,
michael@0:                                 GGLboolean blue,
michael@0:                                 GGLboolean alpha);
michael@0: 
michael@0:     void (*depthMask)(void* c, GGLboolean flag);
michael@0: 
michael@0:     void (*stencilMask)(void* c, GGLuint mask);
michael@0: 
michael@0:     // alpha func
michael@0:     void (*alphaFuncx)(void* c, GGLenum func, GGLclampx ref);
michael@0: 
michael@0:     // depth func
michael@0:     void (*depthFunc)(void* c, GGLenum func);
michael@0: 
michael@0:     // logic op
michael@0:     void (*logicOp)(void* c, GGLenum opcode); 
michael@0: 
michael@0:     // clear
michael@0:     void (*clear)(void* c, GGLbitfield mask);
michael@0:     void (*clearColorx)(void* c,
michael@0:             GGLclampx r, GGLclampx g, GGLclampx b, GGLclampx a);
michael@0:     void (*clearDepthx)(void* c, GGLclampx depth);
michael@0:     void (*clearStencil)(void* c, GGLint s);
michael@0: 
michael@0:     // framebuffer operations
michael@0:     void (*copyPixels)(void* c, GGLint x, GGLint y,
michael@0:             GGLsizei width, GGLsizei height, GGLenum type);
michael@0:     void (*rasterPos2x)(void* c, GGLfixed x, GGLfixed y);
michael@0:     void (*rasterPos2i)(void* c, GGLint x, GGLint y);
michael@0: } GGLContext;
michael@0: 
michael@0: // ----------------------------------------------------------------------------
michael@0: 
michael@0: #ifdef __cplusplus
michael@0: extern "C" {
michael@0: #endif
michael@0: 
michael@0: // construct / destroy the context
michael@0: ssize_t gglInit(GGLContext** context);
michael@0: ssize_t gglUninit(GGLContext* context);
michael@0: 
michael@0: GGLint gglBitBlti(
michael@0:         GGLContext* c,
michael@0:         int tmu,
michael@0:         GGLint crop[4],
michael@0:         GGLint where[4]);
michael@0: 
michael@0: #ifdef __cplusplus
michael@0: };
michael@0: #endif
michael@0: 
michael@0: // ----------------------------------------------------------------------------
michael@0: 
michael@0: #endif // ANDROID_PIXELFLINGER_H