added RENDERPATH_GLES2
[xonotic/darkplaces.git] / dpsoftrast.h
1
2 #ifndef DPSOFTRAST_H
3 #define DPSOFTRAST_H
4
5 #include <stdlib.h>
6
7 #define DPSOFTRAST_MAXMIPMAPS 16
8 #define DPSOFTRAST_TEXTURE_MAXSIZE (1<<(DPSOFTRAST_MAXMIPMAPS - 1))
9 #define DPSOFTRAST_MAXTEXTUREUNITS 16
10 #define DPSOFTRAST_MAXTEXCOORDARRAYS 8
11
12 // type of pixels in texture (some of these are converted to BGRA8 on update)
13 #define DPSOFTRAST_TEXTURE_FORMAT_BGRA8 0
14 #define DPSOFTRAST_TEXTURE_FORMAT_DEPTH 1
15 #define DPSOFTRAST_TEXTURE_FORMAT_RGBA8 2
16 #define DPSOFTRAST_TEXTURE_FORMAT_ALPHA8 3
17 #define DPSOFTRAST_TEXTURE_FORMAT_COMPAREMASK 3
18
19 // modifier flags for texture (can not be changed after creation)
20 #define DPSOFTRAST_TEXTURE_FLAG_MIPMAP 4
21 #define DPSOFTRAST_TEXTURE_FLAG_CUBEMAP 8
22 #define DPSOFTRAST_TEXTURE_FLAG_USEALPHA 16
23 #define DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE 32
24
25 typedef enum DPSOFTRAST_TEXTURE_FILTER_e
26 {
27         DPSOFTRAST_TEXTURE_FILTER_NEAREST = 0,
28         DPSOFTRAST_TEXTURE_FILTER_LINEAR = 1,
29         DPSOFTRAST_TEXTURE_FILTER_NEAREST_MIPMAP_TRIANGLE = 2,
30         DPSOFTRAST_TEXTURE_FILTER_LINEAR_MIPMAP_TRIANGLE = 3,
31 }
32 DPSOFTRAST_TEXTURE_FILTER;
33
34 void DPSOFTRAST_Init(int width, int height, int numthreads, int interlace, unsigned int *colorpixels, unsigned int *depthpixels);
35 void DPSOFTRAST_Shutdown(void);
36 void DPSOFTRAST_Flush(void);
37 void DPSOFTRAST_Finish(void);
38
39 int DPSOFTRAST_Texture_New(int flags, int width, int height, int depth);
40 void DPSOFTRAST_Texture_Free(int index);
41 void DPSOFTRAST_Texture_UpdatePartial(int index, int mip, const unsigned char *pixels, int blockx, int blocky, int blockwidth, int blockheight);
42 void DPSOFTRAST_Texture_UpdateFull(int index, const unsigned char *pixels);
43 int DPSOFTRAST_Texture_GetWidth(int index, int mip);
44 int DPSOFTRAST_Texture_GetHeight(int index, int mip);
45 int DPSOFTRAST_Texture_GetDepth(int index, int mip);
46 unsigned char *DPSOFTRAST_Texture_GetPixelPointer(int index, int mip);
47 void DPSOFTRAST_Texture_Filter(int index, DPSOFTRAST_TEXTURE_FILTER filter);
48
49 void DPSOFTRAST_SetRenderTargets(int width, int height, unsigned int *depthpixels, unsigned int *colorpixels0, unsigned int *colorpixels1, unsigned int *colorpixels2, unsigned int *colorpixels3);
50 void DPSOFTRAST_Viewport(int x, int y, int width, int height);
51 void DPSOFTRAST_ClearColor(float r, float g, float b, float a);
52 void DPSOFTRAST_ClearDepth(float d);
53 void DPSOFTRAST_ColorMask(int r, int g, int b, int a);
54 void DPSOFTRAST_DepthTest(int enable);
55 void DPSOFTRAST_ScissorTest(int enable);
56 void DPSOFTRAST_Scissor(float x, float y, float width, float height);
57
58 void DPSOFTRAST_BlendFunc(int smodulate, int dmodulate);
59 void DPSOFTRAST_BlendSubtract(int enable);
60 void DPSOFTRAST_DepthMask(int enable);
61 void DPSOFTRAST_DepthFunc(int comparemode);
62 void DPSOFTRAST_DepthRange(float range0, float range1);
63 void DPSOFTRAST_PolygonOffset(float alongnormal, float intoview);
64 void DPSOFTRAST_CullFace(int mode);
65 void DPSOFTRAST_AlphaTest(int enable);
66 void DPSOFTRAST_AlphaFunc(int alphafunc, float alphavalue);
67 void DPSOFTRAST_Color4f(float r, float g, float b, float a);
68 void DPSOFTRAST_GetPixelsBGRA(int blockx, int blocky, int blockwidth, int blockheight, unsigned char *outpixels);
69 void DPSOFTRAST_CopyRectangleToTexture(int index, int mip, int tx, int ty, int sx, int sy, int width, int height);
70 void DPSOFTRAST_SetTexture(int unitnum, int index);
71
72 void DPSOFTRAST_SetVertexPointer(const float *vertex3f, size_t stride);
73 void DPSOFTRAST_SetColorPointer(const float *color4f, size_t stride);
74 void DPSOFTRAST_SetColorPointer4ub(const unsigned char *color4ub, size_t stride);
75 void DPSOFTRAST_SetTexCoordPointer(int unitnum, int numcomponents, size_t stride, const float *texcoordf);
76
77 typedef enum gl20_texunit_e
78 {
79         // postprocess shaders, and generic shaders:
80         GL20TU_FIRST = 0,
81         GL20TU_SECOND = 1,
82         GL20TU_GAMMARAMPS = 2,
83         // standard material properties
84         GL20TU_NORMAL = 0,
85         GL20TU_COLOR = 1,
86         GL20TU_GLOSS = 2,
87         GL20TU_GLOW = 3,
88         // material properties for a second material
89         GL20TU_SECONDARY_NORMAL = 4,
90         GL20TU_SECONDARY_COLOR = 5,
91         GL20TU_SECONDARY_GLOSS = 6,
92         GL20TU_SECONDARY_GLOW = 7,
93         // material properties for a colormapped material
94         // conflicts with secondary material
95         GL20TU_PANTS = 4,
96         GL20TU_SHIRT = 7,
97         // fog fade in the distance
98         GL20TU_FOGMASK = 8,
99         // compiled ambient lightmap and deluxemap
100         GL20TU_LIGHTMAP = 9,
101         GL20TU_DELUXEMAP = 10,
102         // refraction, used by water shaders
103         GL20TU_REFRACTION = 3,
104         // reflection, used by water shaders, also with normal material rendering
105         // conflicts with secondary material
106         GL20TU_REFLECTION = 7,
107         // rtlight attenuation (distance fade) and cubemap filter (projection texturing)
108         // conflicts with lightmap/deluxemap
109         GL20TU_ATTENUATION = 9,
110         GL20TU_CUBE = 10,
111         GL20TU_SHADOWMAP2D = 15,
112         GL20TU_CUBEPROJECTION = 12,
113         // rtlight prepass data (screenspace depth and normalmap)
114         GL20TU_SCREENDEPTH = 13,
115         GL20TU_SCREENNORMALMAP = 14,
116         // lightmap prepass data (screenspace diffuse and specular from lights)
117         GL20TU_SCREENDIFFUSE = 11,
118         GL20TU_SCREENSPECULAR = 12,
119         // fake reflections
120         GL20TU_REFLECTMASK = 5,
121         GL20TU_REFLECTCUBE = 6,
122         GL20TU_FOGHEIGHTTEXTURE = 14
123 }
124 gl20_texunit;
125
126 typedef enum gles2_attrib_e
127 {
128         GLES2ATTRIB_POSITION = 0,
129         GLES2ATTRIB_COLOR = 1,
130         GLES2ATTRIB_TEXCOORD0 = 2,
131         GLES2ATTRIB_TEXCOORD1 = 3,
132         GLES2ATTRIB_TEXCOORD2 = 4,
133         GLES2ATTRIB_TEXCOORD3 = 5,
134         GLES2ATTRIB_TEXCOORD4 = 6,
135         GLES2ATTRIB_TEXCOORD5 = 7,
136         GLES2ATTRIB_TEXCOORD6 = 8,
137         GLES2ATTRIB_TEXCOORD7 = 9,
138 }
139 gles2_attrib;
140
141 // this enum selects which of the glslshadermodeinfo entries should be used
142 typedef enum shadermode_e
143 {
144         SHADERMODE_GENERIC, ///< (particles/HUD/etc) vertex color, optionally multiplied by one texture
145         SHADERMODE_POSTPROCESS, ///< postprocessing shader (r_glsl_postprocess)
146         SHADERMODE_DEPTH_OR_SHADOW, ///< (depthfirst/shadows) vertex shader only
147         SHADERMODE_FLATCOLOR, ///< (lightmap) modulate texture by uniform color (q1bsp, q3bsp)
148         SHADERMODE_VERTEXCOLOR, ///< (lightmap) modulate texture by vertex colors (q3bsp)
149         SHADERMODE_LIGHTMAP, ///< (lightmap) modulate texture by lightmap texture (q1bsp, q3bsp)
150         SHADERMODE_FAKELIGHT, ///< (fakelight) modulate texture by "fake" lighting (no lightmaps, no nothing)
151         SHADERMODE_LIGHTDIRECTIONMAP_MODELSPACE, ///< (lightmap) use directional pixel shading from texture containing modelspace light directions (q3bsp deluxemap)
152         SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE, ///< (lightmap) use directional pixel shading from texture containing tangentspace light directions (q1bsp deluxemap)
153         SHADERMODE_LIGHTDIRECTION, ///< (lightmap) use directional pixel shading from fixed light direction (q3bsp)
154         SHADERMODE_LIGHTSOURCE, ///< (lightsource) use directional pixel shading from light source (rtlight)
155         SHADERMODE_REFRACTION, ///< refract background (the material is rendered normally after this pass)
156         SHADERMODE_WATER, ///< refract background and reflection (the material is rendered normally after this pass)
157         SHADERMODE_SHOWDEPTH, ///< (debugging) renders depth as color
158         SHADERMODE_DEFERREDGEOMETRY, ///< (deferred) render material properties to screenspace geometry buffers
159         SHADERMODE_DEFERREDLIGHTSOURCE, ///< (deferred) use directional pixel shading from light source (rtlight) on screenspace geometry buffers
160         SHADERMODE_COUNT
161 }
162 shadermode_t;
163
164 typedef enum shaderpermutation_e
165 {
166         SHADERPERMUTATION_DIFFUSE = 1<<0, ///< (lightsource) whether to use directional shading
167         SHADERPERMUTATION_VERTEXTEXTUREBLEND = 1<<1, ///< indicates this is a two-layer material blend based on vertex alpha (q3bsp)
168         SHADERPERMUTATION_VIEWTINT = 1<<2, ///< view tint (postprocessing only), use vertex colors (generic only)
169         SHADERPERMUTATION_COLORMAPPING = 1<<3, ///< indicates this is a colormapped skin
170         SHADERPERMUTATION_SATURATION = 1<<4, ///< saturation (postprocessing only)
171         SHADERPERMUTATION_FOGINSIDE = 1<<5, ///< tint the color by fog color or black if using additive blend mode
172         SHADERPERMUTATION_FOGOUTSIDE = 1<<6, ///< tint the color by fog color or black if using additive blend mode
173         SHADERPERMUTATION_FOGHEIGHTTEXTURE = 1<<7, ///< fog color and density determined by texture mapped on vertical axis
174         SHADERPERMUTATION_GAMMARAMPS = 1<<8, ///< gamma (postprocessing only)
175         SHADERPERMUTATION_CUBEFILTER = 1<<9, ///< (lightsource) use cubemap light filter
176         SHADERPERMUTATION_GLOW = 1<<10, ///< (lightmap) blend in an additive glow texture
177         SHADERPERMUTATION_BLOOM = 1<<11, ///< bloom (postprocessing only)
178         SHADERPERMUTATION_SPECULAR = 1<<12, ///< (lightsource or deluxemapping) render specular effects
179         SHADERPERMUTATION_POSTPROCESSING = 1<<13, ///< user defined postprocessing (postprocessing only)
180         SHADERPERMUTATION_REFLECTION = 1<<14, ///< normalmap-perturbed reflection of the scene infront of the surface, preformed as an overlay on the surface
181         SHADERPERMUTATION_OFFSETMAPPING = 1<<15, ///< adjust texcoords to roughly simulate a displacement mapped surface
182         SHADERPERMUTATION_OFFSETMAPPING_RELIEFMAPPING = 1<<16, ///< adjust texcoords to accurately simulate a displacement mapped surface (requires OFFSETMAPPING to also be set!)
183         SHADERPERMUTATION_SHADOWMAP2D = 1<<17, ///< (lightsource) use shadowmap texture as light filter
184         SHADERPERMUTATION_SHADOWMAPPCF = 1<<18, ///< (lightsource) use percentage closer filtering on shadowmap test results
185         SHADERPERMUTATION_SHADOWMAPPCF2 = 1<<19, ///< (lightsource) use higher quality percentage closer filtering on shadowmap test results
186         SHADERPERMUTATION_SHADOWSAMPLER = 1<<20, ///< (lightsource) use hardware shadowmap test
187         SHADERPERMUTATION_SHADOWMAPVSDCT = 1<<21, ///< (lightsource) use virtual shadow depth cube texture for shadowmap indexing
188         SHADERPERMUTATION_SHADOWMAPORTHO = 1<<22, //< (lightsource) use orthographic shadowmap projection
189         SHADERPERMUTATION_DEFERREDLIGHTMAP = 1<<23, ///< (lightmap) read Texture_ScreenDiffuse/Specular textures and add them on top of lightmapping
190         SHADERPERMUTATION_ALPHAKILL = 1<<24, ///< (deferredgeometry) discard pixel if diffuse texture alpha below 0.5
191         SHADERPERMUTATION_REFLECTCUBE = 1<<25, ///< fake reflections using global cubemap (not HDRI light probe)
192         SHADERPERMUTATION_NORMALMAPSCROLLBLEND = 1<<26, // (water) counter-direction normalmaps scrolling
193         SHADERPERMUTATION_LIMIT = 1<<27, ///< size of permutations array
194         SHADERPERMUTATION_COUNT = 27 ///< size of shaderpermutationinfo array
195 }
196 shaderpermutation_t;
197
198 typedef enum DPSOFTRAST_UNIFORM_e
199 {
200         DPSOFTRAST_UNIFORM_Texture_First,
201         DPSOFTRAST_UNIFORM_Texture_Second,
202         DPSOFTRAST_UNIFORM_Texture_GammaRamps,
203         DPSOFTRAST_UNIFORM_Texture_Normal,
204         DPSOFTRAST_UNIFORM_Texture_Color,
205         DPSOFTRAST_UNIFORM_Texture_Gloss,
206         DPSOFTRAST_UNIFORM_Texture_Glow,
207         DPSOFTRAST_UNIFORM_Texture_SecondaryNormal,
208         DPSOFTRAST_UNIFORM_Texture_SecondaryColor,
209         DPSOFTRAST_UNIFORM_Texture_SecondaryGloss,
210         DPSOFTRAST_UNIFORM_Texture_SecondaryGlow,
211         DPSOFTRAST_UNIFORM_Texture_Pants,
212         DPSOFTRAST_UNIFORM_Texture_Shirt,
213         DPSOFTRAST_UNIFORM_Texture_FogHeightTexture,
214         DPSOFTRAST_UNIFORM_Texture_FogMask,
215         DPSOFTRAST_UNIFORM_Texture_Lightmap,
216         DPSOFTRAST_UNIFORM_Texture_Deluxemap,
217         DPSOFTRAST_UNIFORM_Texture_Attenuation,
218         DPSOFTRAST_UNIFORM_Texture_Cube,
219         DPSOFTRAST_UNIFORM_Texture_Refraction,
220         DPSOFTRAST_UNIFORM_Texture_Reflection,
221         DPSOFTRAST_UNIFORM_Texture_ShadowMap2D,
222         DPSOFTRAST_UNIFORM_Texture_CubeProjection,
223         DPSOFTRAST_UNIFORM_Texture_ScreenDepth,
224         DPSOFTRAST_UNIFORM_Texture_ScreenNormalMap,
225         DPSOFTRAST_UNIFORM_Texture_ScreenDiffuse,
226         DPSOFTRAST_UNIFORM_Texture_ScreenSpecular,
227         DPSOFTRAST_UNIFORM_Texture_ReflectMask,
228         DPSOFTRAST_UNIFORM_Texture_ReflectCube,
229         DPSOFTRAST_UNIFORM_Alpha,
230         DPSOFTRAST_UNIFORM_BloomBlur_Parameters,
231         DPSOFTRAST_UNIFORM_ClientTime,
232         DPSOFTRAST_UNIFORM_Color_Ambient,
233         DPSOFTRAST_UNIFORM_Color_Diffuse,
234         DPSOFTRAST_UNIFORM_Color_Specular,
235         DPSOFTRAST_UNIFORM_Color_Glow,
236         DPSOFTRAST_UNIFORM_Color_Pants,
237         DPSOFTRAST_UNIFORM_Color_Shirt,
238         DPSOFTRAST_UNIFORM_DeferredColor_Ambient,
239         DPSOFTRAST_UNIFORM_DeferredColor_Diffuse,
240         DPSOFTRAST_UNIFORM_DeferredColor_Specular,
241         DPSOFTRAST_UNIFORM_DeferredMod_Diffuse,
242         DPSOFTRAST_UNIFORM_DeferredMod_Specular,
243         DPSOFTRAST_UNIFORM_DistortScaleRefractReflect,
244         DPSOFTRAST_UNIFORM_EyePosition,
245         DPSOFTRAST_UNIFORM_FogColor,
246         DPSOFTRAST_UNIFORM_FogHeightFade,
247         DPSOFTRAST_UNIFORM_FogPlane,
248         DPSOFTRAST_UNIFORM_FogPlaneViewDist,
249         DPSOFTRAST_UNIFORM_FogRangeRecip,
250         DPSOFTRAST_UNIFORM_LightColor,
251         DPSOFTRAST_UNIFORM_LightDir,
252         DPSOFTRAST_UNIFORM_LightPosition,
253         DPSOFTRAST_UNIFORM_OffsetMapping_Scale,
254         DPSOFTRAST_UNIFORM_PixelSize,
255         DPSOFTRAST_UNIFORM_ReflectColor,
256         DPSOFTRAST_UNIFORM_ReflectFactor,
257         DPSOFTRAST_UNIFORM_ReflectOffset,
258         DPSOFTRAST_UNIFORM_RefractColor,
259         DPSOFTRAST_UNIFORM_Saturation,
260         DPSOFTRAST_UNIFORM_ScreenCenterRefractReflect,
261         DPSOFTRAST_UNIFORM_ScreenScaleRefractReflect,
262         DPSOFTRAST_UNIFORM_ScreenToDepth,
263         DPSOFTRAST_UNIFORM_ShadowMap_Parameters,
264         DPSOFTRAST_UNIFORM_ShadowMap_TextureScale,
265         DPSOFTRAST_UNIFORM_SpecularPower,
266         DPSOFTRAST_UNIFORM_UserVec1,
267         DPSOFTRAST_UNIFORM_UserVec2,
268         DPSOFTRAST_UNIFORM_UserVec3,
269         DPSOFTRAST_UNIFORM_UserVec4,
270         DPSOFTRAST_UNIFORM_ViewTintColor,
271         DPSOFTRAST_UNIFORM_ViewToLightM1,
272         DPSOFTRAST_UNIFORM_ViewToLightM2,
273         DPSOFTRAST_UNIFORM_ViewToLightM3,
274         DPSOFTRAST_UNIFORM_ViewToLightM4,
275         DPSOFTRAST_UNIFORM_ModelToLightM1,
276         DPSOFTRAST_UNIFORM_ModelToLightM2,
277         DPSOFTRAST_UNIFORM_ModelToLightM3,
278         DPSOFTRAST_UNIFORM_ModelToLightM4,
279         DPSOFTRAST_UNIFORM_TexMatrixM1,
280         DPSOFTRAST_UNIFORM_TexMatrixM2,
281         DPSOFTRAST_UNIFORM_TexMatrixM3,
282         DPSOFTRAST_UNIFORM_TexMatrixM4,
283         DPSOFTRAST_UNIFORM_BackgroundTexMatrixM1,
284         DPSOFTRAST_UNIFORM_BackgroundTexMatrixM2,
285         DPSOFTRAST_UNIFORM_BackgroundTexMatrixM3,
286         DPSOFTRAST_UNIFORM_BackgroundTexMatrixM4,
287         DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1,
288         DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM2,
289         DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM3,
290         DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM4,
291         DPSOFTRAST_UNIFORM_ModelViewMatrixM1,
292         DPSOFTRAST_UNIFORM_ModelViewMatrixM2,
293         DPSOFTRAST_UNIFORM_ModelViewMatrixM3,
294         DPSOFTRAST_UNIFORM_ModelViewMatrixM4,
295         DPSOFTRAST_UNIFORM_PixelToScreenTexCoord,
296         DPSOFTRAST_UNIFORM_ModelToReflectCubeM1,
297         DPSOFTRAST_UNIFORM_ModelToReflectCubeM2,
298         DPSOFTRAST_UNIFORM_ModelToReflectCubeM3,
299         DPSOFTRAST_UNIFORM_ModelToReflectCubeM4,
300         DPSOFTRAST_UNIFORM_ShadowMapMatrixM1,
301         DPSOFTRAST_UNIFORM_ShadowMapMatrixM2,
302         DPSOFTRAST_UNIFORM_ShadowMapMatrixM3,
303         DPSOFTRAST_UNIFORM_ShadowMapMatrixM4,
304         DPSOFTRAST_UNIFORM_BloomColorSubtract,
305         DPSOFTRAST_UNIFORM_NormalmapScrollBlend,
306         DPSOFTRAST_UNIFORM_TOTAL
307 }
308 DPSOFTRAST_UNIFORM;
309
310 void DPSOFTRAST_SetShader(int mode, int permutation);
311 #define DPSOFTRAST_Uniform1f(index, v0) DPSOFTRAST_Uniform4f(index, v0, 0, 0, 0)
312 #define DPSOFTRAST_Uniform2f(index, v0, v1) DPSOFTRAST_Uniform4f(index, v0, v1, 0, 0)
313 #define DPSOFTRAST_Uniform3f(index, v0, v1, v2) DPSOFTRAST_Uniform4f(index, v0, v1, v2, 0)
314 void DPSOFTRAST_Uniform4f(DPSOFTRAST_UNIFORM index, float v0, float v1, float v2, float v3);
315 void DPSOFTRAST_Uniform4fv(DPSOFTRAST_UNIFORM index, const float *v);
316 void DPSOFTRAST_UniformMatrix4fv(DPSOFTRAST_UNIFORM index, int arraysize, int transpose, const float *v);
317 void DPSOFTRAST_Uniform1i(DPSOFTRAST_UNIFORM index, int i0);
318
319 void DPSOFTRAST_DrawTriangles(int firstvertex, int numvertices, int numtriangles, const int *element3i, const unsigned short *element3s);
320
321 #endif // DPSOFTRAST_H