X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fswrast%2Fs_texfilter.c;h=9e44fba3daf146c4c39634acef67a1278f595dac;hb=dd90d304f2751cbd3ca9a961c8e54d37aaa47d91;hp=59673bb978acc88909de932da3bd7203067917e3;hpb=aa8abf8081023c00469b6c88760ed0291033eb6e;p=mesa.git diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c index 59673bb978a..9e44fba3daf 100644 --- a/src/mesa/swrast/s_texfilter.c +++ b/src/mesa/swrast/s_texfilter.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5 + * Version: 7.0.3 * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -23,11 +23,11 @@ */ -#include "glheader.h" -#include "context.h" -#include "colormac.h" -#include "imports.h" -#include "texformat.h" +#include "main/glheader.h" +#include "main/context.h" +#include "main/colormac.h" +#include "main/imports.h" +#include "main/texformat.h" #include "s_context.h" #include "s_texfilter.h" @@ -213,17 +213,10 @@ lerp_rgba_3d(GLchan result[4], GLfloat a, GLfloat b, GLfloat c, /** - * Compute the remainder of a divided by b, but be careful with - * negative values so that GL_REPEAT mode works right. + * If A is a signed integer, A % B doesn't give the right value for A < 0 + * (in terms of texture repeat). Just casting to unsigned fixes that. */ -static INLINE GLint -repeat_remainder(GLint a, GLint b) -{ - if (a >= 0) - return a % b; - else - return (a + 1) % b + b - 1; -} +#define REMAINDER(A, B) ((unsigned) (A) % (unsigned) (B)) /** @@ -241,13 +234,13 @@ repeat_remainder(GLint a, GLint b) switch (wrapMode) { \ case GL_REPEAT: \ U = S * SIZE - 0.5F; \ - if (tObj->_IsPowerOfTwo) { \ + if (img->_IsPowerOfTwo) { \ I0 = IFLOOR(U) & (SIZE - 1); \ I1 = (I0 + 1) & (SIZE - 1); \ } \ else { \ - I0 = repeat_remainder(IFLOOR(U), SIZE); \ - I1 = repeat_remainder(I0 + 1, SIZE); \ + I0 = REMAINDER(IFLOOR(U), SIZE); \ + I1 = REMAINDER(I0 + 1, SIZE); \ } \ break; \ case GL_CLAMP_TO_EDGE: \ @@ -297,7 +290,7 @@ repeat_remainder(GLint a, GLint b) } \ break; \ case GL_MIRROR_CLAMP_EXT: \ - U = (GLfloat) fabs(S); \ + U = FABSF(S); \ if (U >= 1.0F) \ U = (GLfloat) SIZE; \ else \ @@ -307,7 +300,7 @@ repeat_remainder(GLint a, GLint b) I1 = I0 + 1; \ break; \ case GL_MIRROR_CLAMP_TO_EDGE_EXT: \ - U = (GLfloat) fabs(S); \ + U = FABSF(S); \ if (U >= 1.0F) \ U = (GLfloat) SIZE; \ else \ @@ -324,7 +317,7 @@ repeat_remainder(GLint a, GLint b) { \ const GLfloat min = -1.0F / (2.0F * SIZE); \ const GLfloat max = 1.0F - min; \ - U = (GLfloat) fabs(S); \ + U = FABSF(S); \ if (U <= min) \ U = min * SIZE; \ else if (U >= max) \ @@ -349,6 +342,7 @@ repeat_remainder(GLint a, GLint b) break; \ default: \ _mesa_problem(ctx, "Bad wrap mode"); \ + return; \ } \ } @@ -363,10 +357,10 @@ repeat_remainder(GLint a, GLint b) /* s limited to [0,1) */ \ /* i limited to [0,size-1] */ \ I = IFLOOR(S * SIZE); \ - if (tObj->_IsPowerOfTwo) \ + if (img->_IsPowerOfTwo) \ I &= (SIZE - 1); \ else \ - I = repeat_remainder(I, SIZE); \ + I = REMAINDER(I, SIZE); \ break; \ case GL_CLAMP_TO_EDGE: \ { \ @@ -418,7 +412,7 @@ repeat_remainder(GLint a, GLint b) { \ /* s limited to [0,1] */ \ /* i limited to [0,size-1] */ \ - const GLfloat u = (GLfloat) fabs(S); \ + const GLfloat u = FABSF(S); \ if (u <= 0.0F) \ I = 0; \ else if (u >= 1.0F) \ @@ -433,7 +427,7 @@ repeat_remainder(GLint a, GLint b) /* i limited to [0, size-1] */ \ const GLfloat min = 1.0F / (2.0F * SIZE); \ const GLfloat max = 1.0F - min; \ - const GLfloat u = (GLfloat) fabs(S); \ + const GLfloat u = FABSF(S); \ if (u < min) \ I = 0; \ else if (u > max) \ @@ -448,7 +442,7 @@ repeat_remainder(GLint a, GLint b) /* i limited to [0, size-1] */ \ const GLfloat min = -1.0F / (2.0F * SIZE); \ const GLfloat max = 1.0F - min; \ - const GLfloat u = (GLfloat) fabs(S); \ + const GLfloat u = FABSF(S); \ if (u < min) \ I = -1; \ else if (u > max) \ @@ -469,6 +463,7 @@ repeat_remainder(GLint a, GLint b) break; \ default: \ _mesa_problem(ctx, "Bad wrap mode"); \ + return; \ } \ } @@ -590,13 +585,13 @@ compute_min_mag_ranges(const struct gl_texture_object *tObj, } #endif /* DEBUG */ - if (lambda[0] <= minMagThresh && lambda[n-1] <= minMagThresh) { + if (lambda[0] <= minMagThresh && (n <= 1 || lambda[n-1] <= minMagThresh)) { /* magnification for whole span */ *magStart = 0; *magEnd = n; *minStart = *minEnd = 0; } - else if (lambda[0] > minMagThresh && lambda[n-1] > minMagThresh) { + else if (lambda[0] > minMagThresh && (n <=1 || lambda[n-1] > minMagThresh)) { /* minification for whole span */ *minStart = 0; *minEnd = n; @@ -1038,10 +1033,12 @@ sample_2d_linear_repeat(GLcontext *ctx, GLfloat a, b; GLchan t00[4], t10[4], t01[4], t11[4]; /* sampled texel colors */ + (void) ctx; + ASSERT(tObj->WrapS == GL_REPEAT); ASSERT(tObj->WrapT == GL_REPEAT); ASSERT(img->Border == 0); - ASSERT(img->Format != GL_COLOR_INDEX); + ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX); ASSERT(img->_IsPowerOfTwo); COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[0], u, width, i0, i1); @@ -1152,7 +1149,6 @@ sample_2d_linear_mipmap_linear_repeat( GLcontext *ctx, ASSERT(lambda != NULL); ASSERT(tObj->WrapS == GL_REPEAT); ASSERT(tObj->WrapT == GL_REPEAT); - ASSERT(tObj->_IsPowerOfTwo); for (i = 0; i < n; i++) { GLint level = linear_mipmap_level(tObj, lambda[i]); if (level >= tObj->_MaxLevel) { @@ -1195,7 +1191,10 @@ sample_linear_2d( GLcontext *ctx, GLuint i; struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel]; (void) lambda; - if (tObj->WrapS == GL_REPEAT && tObj->WrapT == GL_REPEAT) { + if (tObj->WrapS == GL_REPEAT && + tObj->WrapT == GL_REPEAT && + image->_IsPowerOfTwo && + image->Border == 0) { for (i=0;iWrapS==GL_REPEAT); ASSERT(tObj->WrapT==GL_REPEAT); ASSERT(img->Border==0); - ASSERT(img->Format==GL_RGB); + ASSERT(img->TexFormat->MesaFormat==MESA_FORMAT_RGB); ASSERT(img->_IsPowerOfTwo); for (k=0; kWrapS==GL_REPEAT); ASSERT(tObj->WrapT==GL_REPEAT); ASSERT(img->Border==0); - ASSERT(img->Format==GL_RGBA); + ASSERT(img->TexFormat->MesaFormat==MESA_FORMAT_RGBA); ASSERT(img->_IsPowerOfTwo); for (i = 0; i < n; i++) { @@ -1305,7 +1304,7 @@ sample_lambda_2d( GLcontext *ctx, const GLboolean repeatNoBorderPOT = (tObj->WrapS == GL_REPEAT) && (tObj->WrapT == GL_REPEAT) && (tImg->Border == 0 && (tImg->Width == tImg->RowStride)) - && (tImg->Format != GL_COLOR_INDEX) + && (tImg->TexFormat->BaseFormat != GL_COLOR_INDEX) && tImg->_IsPowerOfTwo; ASSERT(lambda != NULL); @@ -1320,16 +1319,10 @@ sample_lambda_2d( GLcontext *ctx, if (repeatNoBorderPOT) { switch (tImg->TexFormat->MesaFormat) { case MESA_FORMAT_RGB: - case MESA_FORMAT_RGB888: - /*case MESA_FORMAT_BGR888:*/ opt_sample_rgb_2d(ctx, tObj, m, texcoords + minStart, NULL, rgba + minStart); break; case MESA_FORMAT_RGBA: - case MESA_FORMAT_RGBA8888: - case MESA_FORMAT_ARGB8888: - /*case MESA_FORMAT_ABGR8888:*/ - /*case MESA_FORMAT_BGRA8888:*/ opt_sample_rgba_2d(ctx, tObj, m, texcoords + minStart, NULL, rgba + minStart); break; @@ -1383,16 +1376,10 @@ sample_lambda_2d( GLcontext *ctx, if (repeatNoBorderPOT) { switch (tImg->TexFormat->MesaFormat) { case MESA_FORMAT_RGB: - case MESA_FORMAT_RGB888: - /*case MESA_FORMAT_BGR888:*/ opt_sample_rgb_2d(ctx, tObj, m, texcoords + magStart, NULL, rgba + magStart); break; case MESA_FORMAT_RGBA: - case MESA_FORMAT_RGBA8888: - case MESA_FORMAT_ARGB8888: - /*case MESA_FORMAT_ABGR8888:*/ - /*case MESA_FORMAT_BGRA8888:*/ opt_sample_rgba_2d(ctx, tObj, m, texcoords + magStart, NULL, rgba + magStart); break; @@ -1869,8 +1856,19 @@ sample_cube_nearest_mipmap_nearest(GLcontext *ctx, for (i = 0; i < n; i++) { const struct gl_texture_image **images; GLfloat newCoord[4]; - GLint level = nearest_mipmap_level(tObj, lambda[i]); + GLint level; images = choose_cube_face(tObj, texcoord[i], newCoord); + + /* XXX we actually need to recompute lambda here based on the newCoords. + * But we would need the texcoords of adjacent fragments to compute that + * properly, and we don't have those here. + * For now, do an approximation: subtracting 1 from the chosen mipmap + * level seems to work in some test cases. + * The same adjustment is done in the next few functions. + */ + level = nearest_mipmap_level(tObj, lambda[i]); + level = MAX2(level - 1, 0); + sample_2d_nearest(ctx, tObj, images[level], newCoord, rgba[i]); } } @@ -1888,6 +1886,7 @@ sample_cube_linear_mipmap_nearest(GLcontext *ctx, const struct gl_texture_image **images; GLfloat newCoord[4]; GLint level = nearest_mipmap_level(tObj, lambda[i]); + level = MAX2(level - 1, 0); /* see comment above */ images = choose_cube_face(tObj, texcoord[i], newCoord); sample_2d_linear(ctx, tObj, images[level], newCoord, rgba[i]); } @@ -1906,6 +1905,7 @@ sample_cube_nearest_mipmap_linear(GLcontext *ctx, const struct gl_texture_image **images; GLfloat newCoord[4]; GLint level = linear_mipmap_level(tObj, lambda[i]); + level = MAX2(level - 1, 0); /* see comment above */ images = choose_cube_face(tObj, texcoord[i], newCoord); if (level >= tObj->_MaxLevel) { sample_2d_nearest(ctx, tObj, images[tObj->_MaxLevel], @@ -1934,6 +1934,7 @@ sample_cube_linear_mipmap_linear(GLcontext *ctx, const struct gl_texture_image **images; GLfloat newCoord[4]; GLint level = linear_mipmap_level(tObj, lambda[i]); + level = MAX2(level - 1, 0); /* see comment above */ images = choose_cube_face(tObj, texcoord[i], newCoord); if (level >= tObj->_MaxLevel) { sample_2d_linear(ctx, tObj, images[tObj->_MaxLevel], @@ -2023,6 +2024,60 @@ sample_lambda_cube( GLcontext *ctx, /* Texture Rectangle Sampling Functions */ /**********************************************************************/ + +/** + * Do clamp/wrap for a texture rectangle coord, GL_NEAREST filter mode. + */ +static INLINE GLint +clamp_rect_coord_nearest(GLenum wrapMode, GLfloat coord, GLint max) +{ + if (wrapMode == GL_CLAMP) { + return IFLOOR( CLAMP(coord, 0.0F, max - 1) ); + } + else if (wrapMode == GL_CLAMP_TO_EDGE) { + return IFLOOR( CLAMP(coord, 0.5F, max - 0.5F) ); + } + else { + return IFLOOR( CLAMP(coord, -0.5F, max + 0.5F) ); + } +} + + +/* + * As above, but GL_LINEAR filtering. + */ +static INLINE void +clamp_rect_coord_linear(GLenum wrapMode, GLfloat coord, GLint max, + GLint *i0out, GLint *i1out) +{ + GLfloat fcol; + GLint i0, i1; + if (wrapMode == GL_CLAMP) { + /* Not exactly what the spec says, but it matches NVIDIA output */ + fcol = CLAMP(coord - 0.5F, 0.0, max-1); + i0 = IFLOOR(fcol); + i1 = i0 + 1; + } + else if (wrapMode == GL_CLAMP_TO_EDGE) { + fcol = CLAMP(coord, 0.5F, max - 0.5F); + fcol -= 0.5F; + i0 = IFLOOR(fcol); + i1 = i0 + 1; + if (i1 > max - 1) + i1 = max - 1; + } + else { + ASSERT(wrapMode == GL_CLAMP_TO_BORDER); + fcol = CLAMP(coord, -0.5F, max + 0.5F); + fcol -= 0.5F; + i0 = IFLOOR(fcol); + i1 = i0 + 1; + } + *i0out = i0; + *i1out = i1; +} + + static void sample_nearest_rect(GLcontext *ctx, const struct gl_texture_object *tObj, GLuint n, @@ -2045,31 +2100,12 @@ sample_nearest_rect(GLcontext *ctx, ASSERT(tObj->WrapT == GL_CLAMP || tObj->WrapT == GL_CLAMP_TO_EDGE || tObj->WrapT == GL_CLAMP_TO_BORDER); - ASSERT(img->Format != GL_COLOR_INDEX); + ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX); - /* XXX move Wrap mode tests outside of loops for common cases */ for (i = 0; i < n; i++) { GLint row, col; - /* NOTE: we DO NOT use [0, 1] texture coordinates! */ - if (tObj->WrapS == GL_CLAMP) { - col = IFLOOR( CLAMP(texcoords[i][0], 0.0F, width - 1) ); - } - else if (tObj->WrapS == GL_CLAMP_TO_EDGE) { - col = IFLOOR( CLAMP(texcoords[i][0], 0.5F, width - 0.5F) ); - } - else { - col = IFLOOR( CLAMP(texcoords[i][0], -0.5F, width + 0.5F) ); - } - if (tObj->WrapT == GL_CLAMP) { - row = IFLOOR( CLAMP(texcoords[i][1], 0.0F, height - 1) ); - } - else if (tObj->WrapT == GL_CLAMP_TO_EDGE) { - row = IFLOOR( CLAMP(texcoords[i][1], 0.5F, height - 0.5F) ); - } - else { - row = IFLOOR( CLAMP(texcoords[i][1], -0.5F, height + 0.5F) ); - } - + col = clamp_rect_coord_nearest(tObj->WrapS, texcoords[i][0], width); + row = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height); if (col < 0 || col > width_minus_1 || row < 0 || row > height_minus_1) COPY_CHAN4(rgba[i], tObj->_BorderChan); else @@ -2100,7 +2136,7 @@ sample_linear_rect(GLcontext *ctx, ASSERT(tObj->WrapT == GL_CLAMP || tObj->WrapT == GL_CLAMP_TO_EDGE || tObj->WrapT == GL_CLAMP_TO_BORDER); - ASSERT(img->Format != GL_COLOR_INDEX); + ASSERT(img->TexFormat->BaseFormat != GL_COLOR_INDEX); /* XXX lots of opportunity for optimization in this loop */ for (i = 0; i < n; i++) { @@ -2229,181 +2265,850 @@ sample_lambda_rect( GLcontext *ctx, +/**********************************************************************/ +/* 2D Texture Array Sampling Functions */ +/**********************************************************************/ + /* - * Sample a shadow/depth texture. + * Return the texture sample for coordinate (s,t,r) using GL_NEAREST filter. */ static void -sample_depth_texture( GLcontext *ctx, - const struct gl_texture_object *tObj, GLuint n, - const GLfloat texcoords[][4], const GLfloat lambda[], - GLchan texel[][4] ) +sample_2d_array_nearest(GLcontext *ctx, + const struct gl_texture_object *tObj, + const struct gl_texture_image *img, + const GLfloat texcoord[4], + GLchan rgba[4]) { - const GLint baseLevel = tObj->BaseLevel; - const struct gl_texture_image *texImage = tObj->Image[0][baseLevel]; - const GLuint width = texImage->Width; - const GLuint height = texImage->Height; - GLchan ambient; - GLenum function; - GLchan result; + const GLint width = img->Width2; /* without border, power of two */ + const GLint height = img->Height2; /* without border, power of two */ + const GLint depth = img->Depth; + GLint i, j; + GLint array; + (void) ctx; - (void) lambda; + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i); + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoord[1], height, j); + array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth); - ASSERT(tObj->Image[0][tObj->BaseLevel]->Format == GL_DEPTH_COMPONENT); - ASSERT(tObj->Target == GL_TEXTURE_1D || - tObj->Target == GL_TEXTURE_2D || - tObj->Target == GL_TEXTURE_RECTANGLE_NV); + if (i < 0 || i >= (GLint) img->Width || + j < 0 || j >= (GLint) img->Height || + array < 0 || array >= (GLint) img->Depth) { + /* Need this test for GL_CLAMP_TO_BORDER mode */ + COPY_CHAN4(rgba, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i, j, array, rgba); + } +} - UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->ShadowAmbient); - /* XXXX if tObj->MinFilter != tObj->MagFilter, we're ignoring lambda */ - /* XXX this could be precomputed and saved in the texture object */ - if (tObj->CompareFlag) { - /* GL_SGIX_shadow */ - if (tObj->CompareOperator == GL_TEXTURE_LEQUAL_R_SGIX) { - function = GL_LEQUAL; +/* + * Return the texture sample for coordinate (s,t,r) using GL_LINEAR filter. + */ +static void +sample_2d_array_linear(GLcontext *ctx, + const struct gl_texture_object *tObj, + const struct gl_texture_image *img, + const GLfloat texcoord[4], + GLchan rgba[4]) +{ + const GLint width = img->Width2; + const GLint height = img->Height2; + const GLint depth = img->Depth; + GLint i0, j0, i1, j1; + GLint array; + GLbitfield useBorderColor = 0x0; + GLfloat u, v; + GLfloat a, b; + GLchan t00[4], t01[4], t10[4], t11[4]; + + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1); + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoord[1], v, height, j0, j1); + array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth); + + if (array < 0 || array >= depth) { + COPY_CHAN4(rgba, tObj->_BorderChan); + } + else { + if (img->Border) { + i0 += img->Border; + i1 += img->Border; + j0 += img->Border; + j1 += img->Border; } else { - ASSERT(tObj->CompareOperator == GL_TEXTURE_GEQUAL_R_SGIX); - function = GL_GEQUAL; + /* check if sampling texture border color */ + if (i0 < 0 || i0 >= width) useBorderColor |= I0BIT; + if (i1 < 0 || i1 >= width) useBorderColor |= I1BIT; + if (j0 < 0 || j0 >= height) useBorderColor |= J0BIT; + if (j1 < 0 || j1 >= height) useBorderColor |= J1BIT; } + + /* Fetch texels */ + if (useBorderColor & (I0BIT | J0BIT)) { + COPY_CHAN4(t00, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i0, j0, array, t00); + } + if (useBorderColor & (I1BIT | J0BIT)) { + COPY_CHAN4(t10, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i1, j0, array, t10); + } + if (useBorderColor & (I0BIT | J1BIT)) { + COPY_CHAN4(t01, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i0, j1, array, t01); + } + if (useBorderColor & (I1BIT | J1BIT)) { + COPY_CHAN4(t11, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i1, j1, array, t11); + } + + /* trilinear interpolation of samples */ + a = FRAC(u); + b = FRAC(v); + lerp_rgba_2d(rgba, a, b, t00, t10, t01, t11); } - else if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) { - /* GL_ARB_shadow */ - function = tObj->CompareFunc; - } - else { - function = GL_NONE; /* pass depth through as grayscale */ +} + + + +static void +sample_2d_array_nearest_mipmap_nearest(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4] ) +{ + GLuint i; + for (i = 0; i < n; i++) { + GLint level = nearest_mipmap_level(tObj, lambda[i]); + sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], + rgba[i]); } +} - if (tObj->MagFilter == GL_NEAREST) { - GLuint i; - for (i = 0; i < n; i++) { - GLfloat depthSample; - GLint col, row; - /* XXX fix for texture rectangle! */ - COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0], width, col); - COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoords[i][1], height, row); - texImage->FetchTexelf(texImage, col, row, 0, &depthSample); - switch (function) { - case GL_LEQUAL: - result = (texcoords[i][2] <= depthSample) ? CHAN_MAX : ambient; - break; - case GL_GEQUAL: - result = (texcoords[i][2] >= depthSample) ? CHAN_MAX : ambient; - break; - case GL_LESS: - result = (texcoords[i][2] < depthSample) ? CHAN_MAX : ambient; - break; - case GL_GREATER: - result = (texcoords[i][2] > depthSample) ? CHAN_MAX : ambient; - break; - case GL_EQUAL: - result = (texcoords[i][2] == depthSample) ? CHAN_MAX : ambient; - break; - case GL_NOTEQUAL: - result = (texcoords[i][2] != depthSample) ? CHAN_MAX : ambient; - break; - case GL_ALWAYS: - result = CHAN_MAX; - break; - case GL_NEVER: - result = ambient; - break; - case GL_NONE: - CLAMPED_FLOAT_TO_CHAN(result, depthSample); - break; - default: - _mesa_problem(ctx, "Bad compare func in sample_depth_texture"); - return; - } +static void +sample_2d_array_linear_mipmap_nearest(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4]) +{ + GLuint i; + ASSERT(lambda != NULL); + for (i = 0; i < n; i++) { + GLint level = nearest_mipmap_level(tObj, lambda[i]); + sample_2d_array_linear(ctx, tObj, tObj->Image[0][level], + texcoord[i], rgba[i]); + } +} - switch (tObj->DepthMode) { - case GL_LUMINANCE: - texel[i][RCOMP] = result; - texel[i][GCOMP] = result; - texel[i][BCOMP] = result; - texel[i][ACOMP] = CHAN_MAX; - break; - case GL_INTENSITY: - texel[i][RCOMP] = result; - texel[i][GCOMP] = result; - texel[i][BCOMP] = result; - texel[i][ACOMP] = result; - break; - case GL_ALPHA: - texel[i][RCOMP] = 0; - texel[i][GCOMP] = 0; - texel[i][BCOMP] = 0; - texel[i][ACOMP] = result; - break; - default: - _mesa_problem(ctx, "Bad depth texture mode"); - } + +static void +sample_2d_array_nearest_mipmap_linear(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4]) +{ + GLuint i; + ASSERT(lambda != NULL); + for (i = 0; i < n; i++) { + GLint level = linear_mipmap_level(tObj, lambda[i]); + if (level >= tObj->_MaxLevel) { + sample_2d_array_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel], + texcoord[i], rgba[i]); + } + else { + GLchan t0[4], t1[4]; /* texels */ + const GLfloat f = FRAC(lambda[i]); + sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0); + sample_2d_array_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1); + lerp_rgba(rgba[i], f, t0, t1); } } - else { - GLuint i; - ASSERT(tObj->MagFilter == GL_LINEAR); - for (i = 0; i < n; i++) { - GLfloat depth00, depth01, depth10, depth11; - GLint i0, i1, j0, j1; - GLfloat u, v; - GLuint useBorderTexel; +} - /* XXX fix for texture rectangle! */ - COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0], u, width, i0, i1); - COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoords[i][1], v, height,j0, j1); - useBorderTexel = 0; - if (texImage->Border) { - i0 += texImage->Border; - i1 += texImage->Border; - j0 += texImage->Border; - j1 += texImage->Border; - } - else { - if (i0 < 0 || i0 >= (GLint) width) useBorderTexel |= I0BIT; - if (i1 < 0 || i1 >= (GLint) width) useBorderTexel |= I1BIT; - if (j0 < 0 || j0 >= (GLint) height) useBorderTexel |= J0BIT; - if (j1 < 0 || j1 >= (GLint) height) useBorderTexel |= J1BIT; - } +static void +sample_2d_array_linear_mipmap_linear(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4]) +{ + GLuint i; + ASSERT(lambda != NULL); + for (i = 0; i < n; i++) { + GLint level = linear_mipmap_level(tObj, lambda[i]); + if (level >= tObj->_MaxLevel) { + sample_2d_array_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel], + texcoord[i], rgba[i]); + } + else { + GLchan t0[4], t1[4]; /* texels */ + const GLfloat f = FRAC(lambda[i]); + sample_2d_array_linear(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0); + sample_2d_array_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1); + lerp_rgba(rgba[i], f, t0, t1); + } + } +} - /* get four depth samples from the texture */ - if (useBorderTexel & (I0BIT | J0BIT)) { - depth00 = 1.0; - } - else { - texImage->FetchTexelf(texImage, i0, j0, 0, &depth00); - } - if (useBorderTexel & (I1BIT | J0BIT)) { - depth10 = 1.0; - } - else { - texImage->FetchTexelf(texImage, i1, j0, 0, &depth10); - } - if (useBorderTexel & (I0BIT | J1BIT)) { - depth01 = 1.0; - } - else { - texImage->FetchTexelf(texImage, i0, j1, 0, &depth01); - } - if (useBorderTexel & (I1BIT | J1BIT)) { - depth11 = 1.0; - } - else { - texImage->FetchTexelf(texImage, i1, j1, 0, &depth11); - } - if (0) { - /* compute a single weighted depth sample and do one comparison */ - const GLfloat a = FRAC(u + 1.0F); - const GLfloat b = FRAC(v + 1.0F); - const GLfloat depthSample - = lerp_2d(a, b, depth00, depth10, depth01, depth11); - if ((depthSample <= texcoords[i][2] && function == GL_LEQUAL) || - (depthSample >= texcoords[i][2] && function == GL_GEQUAL)) { +static void +sample_nearest_2d_array(GLcontext *ctx, + const struct gl_texture_object *tObj, GLuint n, + const GLfloat texcoords[][4], const GLfloat lambda[], + GLchan rgba[][4]) +{ + GLuint i; + struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel]; + (void) lambda; + for (i=0;iImage[0][tObj->BaseLevel]; + (void) lambda; + for (i=0;iMinFilter) { + case GL_NEAREST: + for (i = minStart; i < minEnd; i++) + sample_2d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + case GL_LINEAR: + for (i = minStart; i < minEnd; i++) + sample_2d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + case GL_NEAREST_MIPMAP_NEAREST: + sample_2d_array_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart, + lambda + minStart, rgba + minStart); + break; + case GL_LINEAR_MIPMAP_NEAREST: + sample_2d_array_linear_mipmap_nearest(ctx, tObj, m, + texcoords + minStart, + lambda + minStart, + rgba + minStart); + break; + case GL_NEAREST_MIPMAP_LINEAR: + sample_2d_array_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart, + lambda + minStart, rgba + minStart); + break; + case GL_LINEAR_MIPMAP_LINEAR: + sample_2d_array_linear_mipmap_linear(ctx, tObj, m, + texcoords + minStart, + lambda + minStart, + rgba + minStart); + break; + default: + _mesa_problem(ctx, "Bad min filter in sample_2d_array_texture"); + return; + } + } + + if (magStart < magEnd) { + /* do the magnified texels */ + switch (tObj->MagFilter) { + case GL_NEAREST: + for (i = magStart; i < magEnd; i++) + sample_2d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + case GL_LINEAR: + for (i = magStart; i < magEnd; i++) + sample_2d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + default: + _mesa_problem(ctx, "Bad mag filter in sample_2d_array_texture"); + return; + } + } +} + + + + +/**********************************************************************/ +/* 1D Texture Array Sampling Functions */ +/**********************************************************************/ + +/* + * Return the texture sample for coordinate (s,t,r) using GL_NEAREST filter. + */ +static void +sample_1d_array_nearest(GLcontext *ctx, + const struct gl_texture_object *tObj, + const struct gl_texture_image *img, + const GLfloat texcoord[4], + GLchan rgba[4]) +{ + const GLint width = img->Width2; /* without border, power of two */ + const GLint height = img->Height; + GLint i; + GLint array; + (void) ctx; + + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoord[0], width, i); + array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height); + + if (i < 0 || i >= (GLint) img->Width || + array < 0 || array >= (GLint) img->Height) { + /* Need this test for GL_CLAMP_TO_BORDER mode */ + COPY_CHAN4(rgba, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i, array, 0, rgba); + } +} + + + +/* + * Return the texture sample for coordinate (s,t,r) using GL_LINEAR filter. + */ +static void +sample_1d_array_linear(GLcontext *ctx, + const struct gl_texture_object *tObj, + const struct gl_texture_image *img, + const GLfloat texcoord[4], + GLchan rgba[4]) +{ + const GLint width = img->Width2; + const GLint height = img->Height; + GLint i0, i1; + GLint array; + GLbitfield useBorderColor = 0x0; + GLfloat u; + GLfloat a; + GLchan t0[4], t1[4]; + + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoord[0], u, width, i0, i1); + array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height); + + if (img->Border) { + i0 += img->Border; + i1 += img->Border; + } + else { + /* check if sampling texture border color */ + if (i0 < 0 || i0 >= width) useBorderColor |= I0BIT; + if (i1 < 0 || i1 >= width) useBorderColor |= I1BIT; + } + + if (array < 0 || array >= height) useBorderColor |= K0BIT; + + /* Fetch texels */ + if (useBorderColor & (I0BIT | K0BIT)) { + COPY_CHAN4(t0, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i0, array, 0, t0); + } + if (useBorderColor & (I1BIT | K0BIT)) { + COPY_CHAN4(t1, tObj->_BorderChan); + } + else { + img->FetchTexelc(img, i1, array, 0, t1); + } + + /* bilinear interpolation of samples */ + a = FRAC(u); + lerp_rgba(rgba, a, t0, t1); +} + + + +static void +sample_1d_array_nearest_mipmap_nearest(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4] ) +{ + GLuint i; + for (i = 0; i < n; i++) { + GLint level = nearest_mipmap_level(tObj, lambda[i]); + sample_1d_array_nearest(ctx, tObj, tObj->Image[0][level], texcoord[i], + rgba[i]); + } +} + + +static void +sample_1d_array_linear_mipmap_nearest(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4]) +{ + GLuint i; + ASSERT(lambda != NULL); + for (i = 0; i < n; i++) { + GLint level = nearest_mipmap_level(tObj, lambda[i]); + sample_1d_array_linear(ctx, tObj, tObj->Image[0][level], + texcoord[i], rgba[i]); + } +} + + +static void +sample_1d_array_nearest_mipmap_linear(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4]) +{ + GLuint i; + ASSERT(lambda != NULL); + for (i = 0; i < n; i++) { + GLint level = linear_mipmap_level(tObj, lambda[i]); + if (level >= tObj->_MaxLevel) { + sample_1d_array_nearest(ctx, tObj, tObj->Image[0][tObj->_MaxLevel], + texcoord[i], rgba[i]); + } + else { + GLchan t0[4], t1[4]; /* texels */ + const GLfloat f = FRAC(lambda[i]); + sample_1d_array_nearest(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0); + sample_1d_array_nearest(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1); + lerp_rgba(rgba[i], f, t0, t1); + } + } +} + + +static void +sample_1d_array_linear_mipmap_linear(GLcontext *ctx, + const struct gl_texture_object *tObj, + GLuint n, const GLfloat texcoord[][4], + const GLfloat lambda[], GLchan rgba[][4]) +{ + GLuint i; + ASSERT(lambda != NULL); + for (i = 0; i < n; i++) { + GLint level = linear_mipmap_level(tObj, lambda[i]); + if (level >= tObj->_MaxLevel) { + sample_1d_array_linear(ctx, tObj, tObj->Image[0][tObj->_MaxLevel], + texcoord[i], rgba[i]); + } + else { + GLchan t0[4], t1[4]; /* texels */ + const GLfloat f = FRAC(lambda[i]); + sample_1d_array_linear(ctx, tObj, tObj->Image[0][level ], texcoord[i], t0); + sample_1d_array_linear(ctx, tObj, tObj->Image[0][level+1], texcoord[i], t1); + lerp_rgba(rgba[i], f, t0, t1); + } + } +} + + +static void +sample_nearest_1d_array(GLcontext *ctx, + const struct gl_texture_object *tObj, GLuint n, + const GLfloat texcoords[][4], const GLfloat lambda[], + GLchan rgba[][4]) +{ + GLuint i; + struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel]; + (void) lambda; + for (i=0;iImage[0][tObj->BaseLevel]; + (void) lambda; + for (i=0;iMinFilter) { + case GL_NEAREST: + for (i = minStart; i < minEnd; i++) + sample_1d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + case GL_LINEAR: + for (i = minStart; i < minEnd; i++) + sample_1d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + case GL_NEAREST_MIPMAP_NEAREST: + sample_1d_array_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart, + lambda + minStart, rgba + minStart); + break; + case GL_LINEAR_MIPMAP_NEAREST: + sample_1d_array_linear_mipmap_nearest(ctx, tObj, m, + texcoords + minStart, + lambda + minStart, + rgba + minStart); + break; + case GL_NEAREST_MIPMAP_LINEAR: + sample_1d_array_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart, + lambda + minStart, rgba + minStart); + break; + case GL_LINEAR_MIPMAP_LINEAR: + sample_1d_array_linear_mipmap_linear(ctx, tObj, m, + texcoords + minStart, + lambda + minStart, + rgba + minStart); + break; + default: + _mesa_problem(ctx, "Bad min filter in sample_1d_array_texture"); + return; + } + } + + if (magStart < magEnd) { + /* do the magnified texels */ + switch (tObj->MagFilter) { + case GL_NEAREST: + for (i = magStart; i < magEnd; i++) + sample_1d_array_nearest(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + case GL_LINEAR: + for (i = magStart; i < magEnd; i++) + sample_1d_array_linear(ctx, tObj, tObj->Image[0][tObj->BaseLevel], + texcoords[i], rgba[i]); + break; + default: + _mesa_problem(ctx, "Bad mag filter in sample_1d_array_texture"); + return; + } + } +} + + + + +/* + * Sample a shadow/depth texture. + */ +static void +sample_depth_texture( GLcontext *ctx, + const struct gl_texture_object *tObj, GLuint n, + const GLfloat texcoords[][4], const GLfloat lambda[], + GLchan texel[][4] ) +{ + const GLint baseLevel = tObj->BaseLevel; + const struct gl_texture_image *img = tObj->Image[0][baseLevel]; + const GLint width = img->Width; + const GLint height = img->Height; + const GLint depth = img->Depth; + const GLuint compare_coord = (tObj->Target == GL_TEXTURE_2D_ARRAY_EXT) + ? 3 : 2; + GLchan ambient; + GLenum function; + GLchan result; + + (void) lambda; + + ASSERT(img->TexFormat->BaseFormat == GL_DEPTH_COMPONENT || + img->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT); + + ASSERT(tObj->Target == GL_TEXTURE_1D || + tObj->Target == GL_TEXTURE_2D || + tObj->Target == GL_TEXTURE_RECTANGLE_NV || + tObj->Target == GL_TEXTURE_1D_ARRAY_EXT || + tObj->Target == GL_TEXTURE_2D_ARRAY_EXT); + + UNCLAMPED_FLOAT_TO_CHAN(ambient, tObj->ShadowAmbient); + + /* XXXX if tObj->MinFilter != tObj->MagFilter, we're ignoring lambda */ + + function = tObj->_Function; + if (tObj->MagFilter == GL_NEAREST) { + GLuint i; + for (i = 0; i < n; i++) { + GLfloat depthSample; + GLint col, row, slice; + + switch (tObj->Target) { + case GL_TEXTURE_RECTANGLE_ARB: + col = clamp_rect_coord_nearest(tObj->WrapS, texcoords[i][0], width); + row = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height); + slice = 0; + break; + + case GL_TEXTURE_1D: + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0], + width, col); + row = 0; + slice = 0; + break; + + case GL_TEXTURE_2D: + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0], + width, col); + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoords[i][1], + height, row); + slice = 0; + break; + + case GL_TEXTURE_1D_ARRAY_EXT: + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0], + width, col); + row = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height); + slice = 0; + + case GL_TEXTURE_2D_ARRAY_EXT: + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapS, texcoords[i][0], + width, col); + COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, texcoords[i][1], + height, row); + slice = clamp_rect_coord_nearest(tObj->WrapR, texcoords[i][2], depth); + break; + } + + if (col >= 0 && row >= 0 && col < width && row < height && + slice >= 0 && slice < depth) { + img->FetchTexelf(img, col, row, slice, &depthSample); + } + else { + depthSample = tObj->BorderColor[0]; + } + + switch (function) { + case GL_LEQUAL: + result = (texcoords[i][compare_coord] <= depthSample) ? CHAN_MAX : ambient; + break; + case GL_GEQUAL: + result = (texcoords[i][compare_coord] >= depthSample) ? CHAN_MAX : ambient; + break; + case GL_LESS: + result = (texcoords[i][compare_coord] < depthSample) ? CHAN_MAX : ambient; + break; + case GL_GREATER: + result = (texcoords[i][compare_coord] > depthSample) ? CHAN_MAX : ambient; + break; + case GL_EQUAL: + result = (texcoords[i][compare_coord] == depthSample) ? CHAN_MAX : ambient; + break; + case GL_NOTEQUAL: + result = (texcoords[i][compare_coord] != depthSample) ? CHAN_MAX : ambient; + break; + case GL_ALWAYS: + result = CHAN_MAX; + break; + case GL_NEVER: + result = ambient; + break; + case GL_NONE: + CLAMPED_FLOAT_TO_CHAN(result, depthSample); + break; + default: + _mesa_problem(ctx, "Bad compare func in sample_depth_texture"); + return; + } + + switch (tObj->DepthMode) { + case GL_LUMINANCE: + texel[i][RCOMP] = result; + texel[i][GCOMP] = result; + texel[i][BCOMP] = result; + texel[i][ACOMP] = CHAN_MAX; + break; + case GL_INTENSITY: + texel[i][RCOMP] = result; + texel[i][GCOMP] = result; + texel[i][BCOMP] = result; + texel[i][ACOMP] = result; + break; + case GL_ALPHA: + texel[i][RCOMP] = 0; + texel[i][GCOMP] = 0; + texel[i][BCOMP] = 0; + texel[i][ACOMP] = result; + break; + default: + _mesa_problem(ctx, "Bad depth texture mode"); + } + } + } + else { + GLuint i; + ASSERT(tObj->MagFilter == GL_LINEAR); + for (i = 0; i < n; i++) { + GLfloat depth00, depth01, depth10, depth11; + GLint i0, i1, j0, j1; + GLint slice; + GLfloat u, v; + GLuint useBorderTexel; + + switch (tObj->Target) { + case GL_TEXTURE_RECTANGLE_ARB: + clamp_rect_coord_linear(tObj->WrapS, texcoords[i][0], + width, &i0, &i1); + clamp_rect_coord_linear(tObj->WrapT, texcoords[i][1], + height, &j0, &j1); + slice = 0; + break; + + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0], + u, width, i0, i1); + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoords[i][1], + v, height,j0, j1); + slice = 0; + break; + + case GL_TEXTURE_1D_ARRAY_EXT: + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0], + u, width, i0, i1); + j0 = clamp_rect_coord_nearest(tObj->WrapT, texcoords[i][1], height); + j1 = j0; + slice = 0; + + case GL_TEXTURE_2D_ARRAY_EXT: + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapS, texcoords[i][0], + u, width, i0, i1); + COMPUTE_LINEAR_TEXEL_LOCATIONS(tObj->WrapT, texcoords[i][1], + v, height,j0, j1); + slice = clamp_rect_coord_nearest(tObj->WrapR, texcoords[i][2], depth); + break; + } + + useBorderTexel = 0; + if (img->Border) { + i0 += img->Border; + i1 += img->Border; + if (tObj->Target != GL_TEXTURE_1D_ARRAY_EXT) { + j0 += img->Border; + j1 += img->Border; + } + } + else { + if (i0 < 0 || i0 >= (GLint) width) useBorderTexel |= I0BIT; + if (i1 < 0 || i1 >= (GLint) width) useBorderTexel |= I1BIT; + if (j0 < 0 || j0 >= (GLint) height) useBorderTexel |= J0BIT; + if (j1 < 0 || j1 >= (GLint) height) useBorderTexel |= J1BIT; + } + + if (slice < 0 || slice >= (GLint) depth) { + depth00 = tObj->BorderColor[0]; + depth01 = tObj->BorderColor[0]; + depth10 = tObj->BorderColor[0]; + depth11 = tObj->BorderColor[0]; + } + else { + /* get four depth samples from the texture */ + if (useBorderTexel & (I0BIT | J0BIT)) { + depth00 = tObj->BorderColor[0]; + } + else { + img->FetchTexelf(img, i0, j0, slice, &depth00); + } + if (useBorderTexel & (I1BIT | J0BIT)) { + depth10 = tObj->BorderColor[0]; + } + else { + img->FetchTexelf(img, i1, j0, slice, &depth10); + } + + if (tObj->Target != GL_TEXTURE_1D_ARRAY_EXT) { + if (useBorderTexel & (I0BIT | J1BIT)) { + depth01 = tObj->BorderColor[0]; + } + else { + img->FetchTexelf(img, i0, j1, slice, &depth01); + } + if (useBorderTexel & (I1BIT | J1BIT)) { + depth11 = tObj->BorderColor[0]; + } + else { + img->FetchTexelf(img, i1, j1, slice, &depth11); + } + } + else { + depth01 = depth00; + depth11 = depth10; + } + } + + if (0) { + /* compute a single weighted depth sample and do one comparison */ + const GLfloat a = FRAC(u + 1.0F); + const GLfloat b = FRAC(v + 1.0F); + const GLfloat depthSample + = lerp_2d(a, b, depth00, depth10, depth01, depth11); + if ((depthSample <= texcoords[i][compare_coord] && function == GL_LEQUAL) || + (depthSample >= texcoords[i][compare_coord] && function == GL_GEQUAL)) { result = ambient; } else { @@ -2420,45 +3125,45 @@ sample_depth_texture( GLcontext *ctx, switch (function) { case GL_LEQUAL: - if (depth00 <= texcoords[i][2]) luminance -= d; - if (depth01 <= texcoords[i][2]) luminance -= d; - if (depth10 <= texcoords[i][2]) luminance -= d; - if (depth11 <= texcoords[i][2]) luminance -= d; + if (depth00 <= texcoords[i][compare_coord]) luminance -= d; + if (depth01 <= texcoords[i][compare_coord]) luminance -= d; + if (depth10 <= texcoords[i][compare_coord]) luminance -= d; + if (depth11 <= texcoords[i][compare_coord]) luminance -= d; result = (GLchan) luminance; break; case GL_GEQUAL: - if (depth00 >= texcoords[i][2]) luminance -= d; - if (depth01 >= texcoords[i][2]) luminance -= d; - if (depth10 >= texcoords[i][2]) luminance -= d; - if (depth11 >= texcoords[i][2]) luminance -= d; + if (depth00 >= texcoords[i][compare_coord]) luminance -= d; + if (depth01 >= texcoords[i][compare_coord]) luminance -= d; + if (depth10 >= texcoords[i][compare_coord]) luminance -= d; + if (depth11 >= texcoords[i][compare_coord]) luminance -= d; result = (GLchan) luminance; break; case GL_LESS: - if (depth00 < texcoords[i][2]) luminance -= d; - if (depth01 < texcoords[i][2]) luminance -= d; - if (depth10 < texcoords[i][2]) luminance -= d; - if (depth11 < texcoords[i][2]) luminance -= d; + if (depth00 < texcoords[i][compare_coord]) luminance -= d; + if (depth01 < texcoords[i][compare_coord]) luminance -= d; + if (depth10 < texcoords[i][compare_coord]) luminance -= d; + if (depth11 < texcoords[i][compare_coord]) luminance -= d; result = (GLchan) luminance; break; case GL_GREATER: - if (depth00 > texcoords[i][2]) luminance -= d; - if (depth01 > texcoords[i][2]) luminance -= d; - if (depth10 > texcoords[i][2]) luminance -= d; - if (depth11 > texcoords[i][2]) luminance -= d; + if (depth00 > texcoords[i][compare_coord]) luminance -= d; + if (depth01 > texcoords[i][compare_coord]) luminance -= d; + if (depth10 > texcoords[i][compare_coord]) luminance -= d; + if (depth11 > texcoords[i][compare_coord]) luminance -= d; result = (GLchan) luminance; break; case GL_EQUAL: - if (depth00 == texcoords[i][2]) luminance -= d; - if (depth01 == texcoords[i][2]) luminance -= d; - if (depth10 == texcoords[i][2]) luminance -= d; - if (depth11 == texcoords[i][2]) luminance -= d; + if (depth00 == texcoords[i][compare_coord]) luminance -= d; + if (depth01 == texcoords[i][compare_coord]) luminance -= d; + if (depth10 == texcoords[i][compare_coord]) luminance -= d; + if (depth11 == texcoords[i][compare_coord]) luminance -= d; result = (GLchan) luminance; break; case GL_NOTEQUAL: - if (depth00 != texcoords[i][2]) luminance -= d; - if (depth01 != texcoords[i][2]) luminance -= d; - if (depth10 != texcoords[i][2]) luminance -= d; - if (depth11 != texcoords[i][2]) luminance -= d; + if (depth00 != texcoords[i][compare_coord]) luminance -= d; + if (depth01 != texcoords[i][compare_coord]) luminance -= d; + if (depth10 != texcoords[i][compare_coord]) luminance -= d; + if (depth11 != texcoords[i][compare_coord]) luminance -= d; result = (GLchan) luminance; break; case GL_ALWAYS: @@ -2542,7 +3247,7 @@ sample_depth_texture2(const GLcontext *ctx, * GL_TEXTURE_COMPARE_SGIX == GL_TRUE but the current texture object * isn't a depth texture. */ - if (texImage->Format != GL_DEPTH_COMPONENT) { + if (texImage->TexFormat->BaseFormat != GL_DEPTH_COMPONENT) { _mesa_problem(ctx,"GL_TEXTURE_COMPARE_SGIX enabled with non-depth texture"); return; } @@ -2611,7 +3316,7 @@ sample_depth_texture2(const GLcontext *ctx, * We use this function when a texture object is in an "incomplete" state. * When a fragment program attempts to sample an incomplete texture we * return black (see issue 23 in GL_ARB_fragment_program spec). - * Note: fragment programss don't observe the texture enable/disable flags. + * Note: fragment programs don't observe the texture enable/disable flags. */ static void null_sample_func( GLcontext *ctx, @@ -2640,16 +3345,16 @@ texture_sample_func _swrast_choose_texture_sample_func( GLcontext *ctx, const struct gl_texture_object *t ) { - if (!t || !t->Complete) { + if (!t || !t->_Complete) { return &null_sample_func; } else { const GLboolean needLambda = (GLboolean) (t->MinFilter != t->MagFilter); - const GLenum format = t->Image[0][t->BaseLevel]->Format; + const GLenum format = t->Image[0][t->BaseLevel]->TexFormat->BaseFormat; switch (t->Target) { case GL_TEXTURE_1D: - if (format == GL_DEPTH_COMPONENT) { + if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL_EXT) { return &sample_depth_texture; } else if (needLambda) { @@ -2663,7 +3368,7 @@ _swrast_choose_texture_sample_func( GLcontext *ctx, return &sample_nearest_1d; } case GL_TEXTURE_2D: - if (format == GL_DEPTH_COMPONENT) { + if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL_EXT) { return &sample_depth_texture; } else if (needLambda) { @@ -2673,20 +3378,21 @@ _swrast_choose_texture_sample_func( GLcontext *ctx, return &sample_linear_2d; } else { - GLint baseLevel = t->BaseLevel; + /* check for a few optimized cases */ + const struct gl_texture_image *img = t->Image[0][t->BaseLevel]; ASSERT(t->MinFilter == GL_NEAREST); if (t->WrapS == GL_REPEAT && t->WrapT == GL_REPEAT && - t->_IsPowerOfTwo && - t->Image[0][baseLevel]->Border == 0 && - t->Image[0][baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGB) { + img->_IsPowerOfTwo && + img->Border == 0 && + img->TexFormat->MesaFormat == MESA_FORMAT_RGB) { return &opt_sample_rgb_2d; } else if (t->WrapS == GL_REPEAT && t->WrapT == GL_REPEAT && - t->_IsPowerOfTwo && - t->Image[0][baseLevel]->Border == 0 && - t->Image[0][baseLevel]->TexFormat->MesaFormat == MESA_FORMAT_RGBA) { + img->_IsPowerOfTwo && + img->Border == 0 && + img->TexFormat->MesaFormat == MESA_FORMAT_RGBA) { return &opt_sample_rgba_2d; } else { @@ -2716,7 +3422,10 @@ _swrast_choose_texture_sample_func( GLcontext *ctx, return &sample_nearest_cube; } case GL_TEXTURE_RECTANGLE_NV: - if (needLambda) { + if (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL_EXT) { + return &sample_depth_texture; + } + else if (needLambda) { return &sample_lambda_rect; } else if (t->MinFilter == GL_LINEAR) { @@ -2726,6 +3435,28 @@ _swrast_choose_texture_sample_func( GLcontext *ctx, ASSERT(t->MinFilter == GL_NEAREST); return &sample_nearest_rect; } + case GL_TEXTURE_1D_ARRAY_EXT: + if (needLambda) { + return &sample_lambda_1d_array; + } + else if (t->MinFilter == GL_LINEAR) { + return &sample_linear_1d_array; + } + else { + ASSERT(t->MinFilter == GL_NEAREST); + return &sample_nearest_1d_array; + } + case GL_TEXTURE_2D_ARRAY_EXT: + if (needLambda) { + return &sample_lambda_2d_array; + } + else if (t->MinFilter == GL_LINEAR) { + return &sample_linear_2d_array; + } + else { + ASSERT(t->MinFilter == GL_NEAREST); + return &sample_nearest_2d_array; + } default: _mesa_problem(ctx, "invalid target in _swrast_choose_texture_sample_func");