static void split_width(int x, int n, int *splitx, int *nx) { int a, newnx, waste; /* if already power of two just use it */ if (is_power_of_2_i(x)) { splitx[0] = x; (*nx)++; return; } if (n == 1) { /* last part, we have to go larger */ splitx[0] = power_of_2_max_i(x); (*nx)++; } else { /* two or more parts to go, use smaller part */ splitx[0] = power_of_2_min_i(x); newnx = ++(*nx); split_width(x - splitx[0], n - 1, splitx + 1, &newnx); for (waste = 0, a = 0; a < n; a++) waste += splitx[a]; /* if we waste more space or use the same amount, * revert deeper splits and just use larger */ if (waste >= power_of_2_max_i(x)) { splitx[0] = power_of_2_max_i(x); memset(splitx + 1, 0, sizeof(int) * (n - 1)); } else *nx = newnx; } }
/* Reserve space for the specified number of operations in the buffer. */ static ExprOp *parse_alloc_ops(ExprParseState *state, int count) { if (state->ops_count + count > state->max_ops) { state->max_ops = power_of_2_max_i(state->ops_count + count); state->ops = MEM_reallocN(state->ops, state->max_ops * sizeof(ExprOp)); } ExprOp *op = &state->ops[state->ops_count]; state->ops_count += count; return op; }
static void checker_board_color_fill(unsigned char *rect, float *rect_float, int width, int height) { int hue_step, y, x; float hsv[3], rgb[3]; hsv[1] = 1.0; hue_step = power_of_2_max_i(width / 8); if (hue_step < 8) hue_step = 8; for (y = 0; y < height; y++) { hsv[2] = 0.1 + (y * (0.4 / height)); /* use a number lower then 1.0 else its too bright */ for (x = 0; x < width; x++) { hsv[0] = (float)((double)(x / hue_step) * 1.0 / width * hue_step); hsv_to_rgb_v(hsv, rgb); if (rect) { rect[0] = (char)(rgb[0] * 255.0f); rect[1] = (char)(rgb[1] * 255.0f); rect[2] = (char)(rgb[2] * 255.0f); rect[3] = 255; rect += 4; } if (rect_float) { rect_float[0] = rgb[0]; rect_float[1] = rgb[1]; rect_float[2] = rgb[2]; rect_float[3] = 1.0f; rect_float += 4; } } } }
GPUTexture *GPU_texture_create_3D(int w, int h, int depth, int channels, float *fpixels) { GPUTexture *tex; GLenum type, format, internalformat; void *pixels = NULL; float vfBorderColor[4] = {0.0f, 0.0f, 0.0f, 0.0f}; if (!GLEW_VERSION_1_2) return NULL; tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); tex->w = w; tex->h = h; tex->depth = depth; tex->number = -1; tex->refcount = 1; tex->target = GL_TEXTURE_3D; glGenTextures(1, &tex->bindcode); if (!tex->bindcode) { fprintf(stderr, "GPUTexture: texture create failed: %d\n", (int)glGetError()); GPU_texture_free(tex); return NULL; } if (!GPU_non_power_of_two_support()) { tex->w = power_of_2_max_i(tex->w); tex->h = power_of_2_max_i(tex->h); tex->depth = power_of_2_max_i(tex->depth); } tex->number = 0; glBindTexture(tex->target, tex->bindcode); GPU_print_error("3D glBindTexture"); type = GL_FLOAT; if (channels == 4) { format = GL_RGBA; internalformat = GL_RGBA; } else { format = GL_RED; internalformat = GL_INTENSITY; } //if (fpixels) // pixels = GPU_texture_convert_pixels(w*h*depth, fpixels); glTexImage3D(tex->target, 0, internalformat, tex->w, tex->h, tex->depth, 0, format, type, NULL); GPU_print_error("3D glTexImage3D"); if (fpixels) { if (!GPU_non_power_of_two_support() && (w != tex->w || h != tex->h || depth != tex->depth)) { /* clear first to avoid unitialized pixels */ float *zero= MEM_callocN(sizeof(float)*tex->w*tex->h*tex->depth, "zero"); glTexSubImage3D(tex->target, 0, 0, 0, 0, tex->w, tex->h, tex->depth, format, type, zero); MEM_freeN(zero); } glTexSubImage3D(tex->target, 0, 0, 0, 0, w, h, depth, format, type, fpixels); GPU_print_error("3D glTexSubImage3D"); } glTexParameterfv(GL_TEXTURE_3D, GL_TEXTURE_BORDER_COLOR, vfBorderColor); GPU_print_error("3D GL_TEXTURE_BORDER_COLOR"); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); GPU_print_error("3D GL_LINEAR"); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); GPU_print_error("3D GL_CLAMP_TO_BORDER"); if (pixels) MEM_freeN(pixels); GPU_texture_unbind(tex); return tex; }
static GPUTexture *GPU_texture_create_nD(int w, int h, int n, float *fpixels, int depth, char err_out[256]) { GPUTexture *tex; GLenum type, format, internalformat; void *pixels = NULL; if (depth && !GLEW_ARB_depth_texture) return NULL; tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); tex->w = w; tex->h = h; tex->number = -1; tex->refcount = 1; tex->target = (n == 1)? GL_TEXTURE_1D: GL_TEXTURE_2D; tex->depth = depth; glGenTextures(1, &tex->bindcode); if (!tex->bindcode) { if (err_out) { BLI_snprintf(err_out, 256, "GPUTexture: texture create failed: %d", (int)glGetError()); } else { fprintf(stderr, "GPUTexture: texture create failed: %d\n", (int)glGetError()); } GPU_texture_free(tex); return NULL; } if (!GPU_non_power_of_two_support()) { tex->w = power_of_2_max_i(tex->w); tex->h = power_of_2_max_i(tex->h); } tex->number = 0; glBindTexture(tex->target, tex->bindcode); if (depth) { type = GL_UNSIGNED_BYTE; format = GL_DEPTH_COMPONENT; internalformat = GL_DEPTH_COMPONENT; } else { type = GL_UNSIGNED_BYTE; format = GL_RGBA; internalformat = GL_RGBA8; if (fpixels) pixels = GPU_texture_convert_pixels(w*h, fpixels); } if (tex->target == GL_TEXTURE_1D) { glTexImage1D(tex->target, 0, internalformat, tex->w, 0, format, type, NULL); if (fpixels) { glTexSubImage1D(tex->target, 0, 0, w, format, type, pixels ? pixels : fpixels); if (tex->w > w) GPU_glTexSubImageEmpty(tex->target, format, w, 0, tex->w-w, 1); } } else { glTexImage2D(tex->target, 0, internalformat, tex->w, tex->h, 0, format, type, NULL); if (fpixels) { glTexSubImage2D(tex->target, 0, 0, 0, w, h, format, type, pixels ? pixels : fpixels); if (tex->w > w) GPU_glTexSubImageEmpty(tex->target, format, w, 0, tex->w-w, tex->h); if (tex->h > h) GPU_glTexSubImageEmpty(tex->target, format, 0, h, w, tex->h-h); } } if (pixels) MEM_freeN(pixels); if (depth) { glTexParameteri(tex->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(tex->target, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(tex->target, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE); glTexParameteri(tex->target, GL_TEXTURE_COMPARE_FUNC_ARB, GL_LEQUAL); glTexParameteri(tex->target, GL_DEPTH_TEXTURE_MODE_ARB, GL_INTENSITY); } else { glTexParameteri(tex->target, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(tex->target, GL_TEXTURE_MAG_FILTER, GL_LINEAR); } if (tex->target != GL_TEXTURE_1D) { /* CLAMP_TO_BORDER is an OpenGL 1.3 core feature */ GLenum wrapmode = (depth || tex->h == 1)? GL_CLAMP_TO_EDGE: GL_CLAMP_TO_BORDER; glTexParameteri(tex->target, GL_TEXTURE_WRAP_S, wrapmode); glTexParameteri(tex->target, GL_TEXTURE_WRAP_T, wrapmode); #if 0 float borderColor[] = { 1.0f, 1.0f, 1.0f, 1.0f }; glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor); #endif } else glTexParameteri(tex->target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); return tex; }
void draw_smoke_volume(SmokeDomainSettings *sds, Object *ob, GPUTexture *tex, float min[3], float max[3], int res[3], float dx, float UNUSED(base_scale), float viewnormal[3], GPUTexture *tex_shadow, GPUTexture *tex_flame) { int i, j, k, n, good_index; float d /*, d0 */ /* UNUSED */, dd, ds; float *points = NULL; int numpoints = 0; float cor[3] = {1.0f, 1.0f, 1.0f}; int gl_depth = 0, gl_blend = 0; /* draw slices of smoke is adapted from c++ code authored * by: Johannes Schmid and Ingemar Rask, 2006, [email protected] */ float cv[][3] = { {1.0f, 1.0f, 1.0f}, {-1.0f, 1.0f, 1.0f}, {-1.0f, -1.0f, 1.0f}, {1.0f, -1.0f, 1.0f}, {1.0f, 1.0f, -1.0f}, {-1.0f, 1.0f, -1.0f}, {-1.0f, -1.0f, -1.0f}, {1.0f, -1.0f, -1.0f} }; /* edges have the form edges[n][0][xyz] + t*edges[n][1][xyz] */ float edges[12][2][3] = { {{1.0f, 1.0f, -1.0f}, {0.0f, 0.0f, 2.0f}}, {{-1.0f, 1.0f, -1.0f}, {0.0f, 0.0f, 2.0f}}, {{-1.0f, -1.0f, -1.0f}, {0.0f, 0.0f, 2.0f}}, {{1.0f, -1.0f, -1.0f}, {0.0f, 0.0f, 2.0f}}, {{1.0f, -1.0f, 1.0f}, {0.0f, 2.0f, 0.0f}}, {{-1.0f, -1.0f, 1.0f}, {0.0f, 2.0f, 0.0f}}, {{-1.0f, -1.0f, -1.0f}, {0.0f, 2.0f, 0.0f}}, {{1.0f, -1.0f, -1.0f}, {0.0f, 2.0f, 0.0f}}, {{-1.0f, 1.0f, 1.0f}, {2.0f, 0.0f, 0.0f}}, {{-1.0f, -1.0f, 1.0f}, {2.0f, 0.0f, 0.0f}}, {{-1.0f, -1.0f, -1.0f}, {2.0f, 0.0f, 0.0f}}, {{-1.0f, 1.0f, -1.0f}, {2.0f, 0.0f, 0.0f}} }; unsigned char *spec_data; float *spec_pixels; GPUTexture *tex_spec; /* Fragment program to calculate the view3d of smoke */ /* using 4 textures, density, shadow, flame and flame spectrum */ const char *shader_basic = "!!ARBfp1.0\n" "PARAM dx = program.local[0];\n" "PARAM darkness = program.local[1];\n" "PARAM render = program.local[2];\n" "PARAM f = {1.442695041, 1.442695041, 1.442695041, 0.01};\n" "TEMP temp, shadow, flame, spec, value;\n" "TEX temp, fragment.texcoord[0], texture[0], 3D;\n" "TEX shadow, fragment.texcoord[0], texture[1], 3D;\n" "TEX flame, fragment.texcoord[0], texture[2], 3D;\n" "TEX spec, flame.r, texture[3], 1D;\n" /* calculate shading factor from density */ "MUL value.r, temp.a, darkness.a;\n" "MUL value.r, value.r, dx.r;\n" "MUL value.r, value.r, f.r;\n" "EX2 temp, -value.r;\n" /* alpha */ "SUB temp.a, 1.0, temp.r;\n" /* shade colors */ "MUL temp.r, temp.r, shadow.r;\n" "MUL temp.g, temp.g, shadow.r;\n" "MUL temp.b, temp.b, shadow.r;\n" "MUL temp.r, temp.r, darkness.r;\n" "MUL temp.g, temp.g, darkness.g;\n" "MUL temp.b, temp.b, darkness.b;\n" /* for now this just replace smoke shading if rendering fire */ "CMP result.color, render.r, temp, spec;\n" "END\n"; /* color shader */ const char *shader_color = "!!ARBfp1.0\n" "PARAM dx = program.local[0];\n" "PARAM darkness = program.local[1];\n" "PARAM render = program.local[2];\n" "PARAM f = {1.442695041, 1.442695041, 1.442695041, 1.442695041};\n" "TEMP temp, shadow, flame, spec, value;\n" "TEX temp, fragment.texcoord[0], texture[0], 3D;\n" "TEX shadow, fragment.texcoord[0], texture[1], 3D;\n" "TEX flame, fragment.texcoord[0], texture[2], 3D;\n" "TEX spec, flame.r, texture[3], 1D;\n" /* unpremultiply volume texture */ "RCP value.r, temp.a;\n" "MUL temp.r, temp.r, value.r;\n" "MUL temp.g, temp.g, value.r;\n" "MUL temp.b, temp.b, value.r;\n" /* calculate shading factor from density */ "MUL value.r, temp.a, darkness.a;\n" "MUL value.r, value.r, dx.r;\n" "MUL value.r, value.r, f.r;\n" "EX2 value.r, -value.r;\n" /* alpha */ "SUB temp.a, 1.0, value.r;\n" /* shade colors */ "MUL temp.r, temp.r, shadow.r;\n" "MUL temp.g, temp.g, shadow.r;\n" "MUL temp.b, temp.b, shadow.r;\n" "MUL temp.r, temp.r, value.r;\n" "MUL temp.g, temp.g, value.r;\n" "MUL temp.b, temp.b, value.r;\n" /* for now this just replace smoke shading if rendering fire */ "CMP result.color, render.r, temp, spec;\n" "END\n"; GLuint prog; float size[3]; if (!tex) { printf("Could not allocate 3D texture for 3D View smoke drawing.\n"); return; } #ifdef DEBUG_DRAW_TIME TIMEIT_START(draw); #endif /* generate flame spectrum texture */ #define SPEC_WIDTH 256 #define FIRE_THRESH 7 #define MAX_FIRE_ALPHA 0.06f #define FULL_ON_FIRE 100 spec_data = malloc(SPEC_WIDTH * 4 * sizeof(unsigned char)); flame_get_spectrum(spec_data, SPEC_WIDTH, 1500, 3000); spec_pixels = malloc(SPEC_WIDTH * 4 * 16 * 16 * sizeof(float)); for (i = 0; i < 16; i++) { for (j = 0; j < 16; j++) { for (k = 0; k < SPEC_WIDTH; k++) { int index = (j * SPEC_WIDTH * 16 + i * SPEC_WIDTH + k) * 4; if (k >= FIRE_THRESH) { spec_pixels[index] = ((float)spec_data[k * 4]) / 255.0f; spec_pixels[index + 1] = ((float)spec_data[k * 4 + 1]) / 255.0f; spec_pixels[index + 2] = ((float)spec_data[k * 4 + 2]) / 255.0f; spec_pixels[index + 3] = MAX_FIRE_ALPHA * ( (k > FULL_ON_FIRE) ? 1.0f : (k - FIRE_THRESH) / ((float)FULL_ON_FIRE - FIRE_THRESH)); } else { spec_pixels[index] = spec_pixels[index + 1] = spec_pixels[index + 2] = spec_pixels[index + 3] = 0.0f; } } } } tex_spec = GPU_texture_create_1D(SPEC_WIDTH, spec_pixels, NULL); sub_v3_v3v3(size, max, min); /* maxx, maxy, maxz */ cv[0][0] = max[0]; cv[0][1] = max[1]; cv[0][2] = max[2]; /* minx, maxy, maxz */ cv[1][0] = min[0]; cv[1][1] = max[1]; cv[1][2] = max[2]; /* minx, miny, maxz */ cv[2][0] = min[0]; cv[2][1] = min[1]; cv[2][2] = max[2]; /* maxx, miny, maxz */ cv[3][0] = max[0]; cv[3][1] = min[1]; cv[3][2] = max[2]; /* maxx, maxy, minz */ cv[4][0] = max[0]; cv[4][1] = max[1]; cv[4][2] = min[2]; /* minx, maxy, minz */ cv[5][0] = min[0]; cv[5][1] = max[1]; cv[5][2] = min[2]; /* minx, miny, minz */ cv[6][0] = min[0]; cv[6][1] = min[1]; cv[6][2] = min[2]; /* maxx, miny, minz */ cv[7][0] = max[0]; cv[7][1] = min[1]; cv[7][2] = min[2]; copy_v3_v3(edges[0][0], cv[4]); /* maxx, maxy, minz */ copy_v3_v3(edges[1][0], cv[5]); /* minx, maxy, minz */ copy_v3_v3(edges[2][0], cv[6]); /* minx, miny, minz */ copy_v3_v3(edges[3][0], cv[7]); /* maxx, miny, minz */ copy_v3_v3(edges[4][0], cv[3]); /* maxx, miny, maxz */ copy_v3_v3(edges[5][0], cv[2]); /* minx, miny, maxz */ copy_v3_v3(edges[6][0], cv[6]); /* minx, miny, minz */ copy_v3_v3(edges[7][0], cv[7]); /* maxx, miny, minz */ copy_v3_v3(edges[8][0], cv[1]); /* minx, maxy, maxz */ copy_v3_v3(edges[9][0], cv[2]); /* minx, miny, maxz */ copy_v3_v3(edges[10][0], cv[6]); /* minx, miny, minz */ copy_v3_v3(edges[11][0], cv[5]); /* minx, maxy, minz */ // printf("size x: %f, y: %f, z: %f\n", size[0], size[1], size[2]); // printf("min[2]: %f, max[2]: %f\n", min[2], max[2]); edges[0][1][2] = size[2]; edges[1][1][2] = size[2]; edges[2][1][2] = size[2]; edges[3][1][2] = size[2]; edges[4][1][1] = size[1]; edges[5][1][1] = size[1]; edges[6][1][1] = size[1]; edges[7][1][1] = size[1]; edges[8][1][0] = size[0]; edges[9][1][0] = size[0]; edges[10][1][0] = size[0]; edges[11][1][0] = size[0]; glGetBooleanv(GL_BLEND, (GLboolean *)&gl_blend); glGetBooleanv(GL_DEPTH_TEST, (GLboolean *)&gl_depth); glDepthMask(GL_FALSE); glDisable(GL_DEPTH_TEST); glEnable(GL_BLEND); /* find cube vertex that is closest to the viewer */ for (i = 0; i < 8; i++) { float x, y, z; x = cv[i][0] - viewnormal[0] * size[0] * 0.5f; y = cv[i][1] - viewnormal[1] * size[1] * 0.5f; z = cv[i][2] - viewnormal[2] * size[2] * 0.5f; if ((x >= min[0]) && (x <= max[0]) && (y >= min[1]) && (y <= max[1]) && (z >= min[2]) && (z <= max[2])) { break; } } if (i >= 8) { /* fallback, avoid using buffer over-run */ i = 0; } // printf("i: %d\n", i); // printf("point %f, %f, %f\n", cv[i][0], cv[i][1], cv[i][2]); if (GL_TRUE == glewIsSupported("GL_ARB_fragment_program")) { glEnable(GL_FRAGMENT_PROGRAM_ARB); glGenProgramsARB(1, &prog); glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, prog); /* set shader */ if (sds->active_fields & SM_ACTIVE_COLORS) glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)strlen(shader_color), shader_color); else glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)strlen(shader_basic), shader_basic); /* cell spacing */ glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 0, dx, dx, dx, 1.0); /* custom parameter for smoke style (higher = thicker) */ if (sds->active_fields & SM_ACTIVE_COLORS) glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 1, 1.0, 1.0, 1.0, 10.0); else glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 1, sds->active_color[0], sds->active_color[1], sds->active_color[2], 10.0); } else printf("Your gfx card does not support 3D View smoke drawing.\n"); GPU_texture_bind(tex, 0); if (tex_shadow) GPU_texture_bind(tex_shadow, 1); else printf("No volume shadow\n"); if (tex_flame) { GPU_texture_bind(tex_flame, 2); GPU_texture_bind(tex_spec, 3); } if (!GPU_non_power_of_two_support()) { cor[0] = (float)res[0] / (float)power_of_2_max_i(res[0]); cor[1] = (float)res[1] / (float)power_of_2_max_i(res[1]); cor[2] = (float)res[2] / (float)power_of_2_max_i(res[2]); } /* our slices are defined by the plane equation a*x + b*y +c*z + d = 0 * (a,b,c), the plane normal, are given by viewdir * d is the parameter along the view direction. the first d is given by * inserting previously found vertex into the plane equation */ /* d0 = (viewnormal[0]*cv[i][0] + viewnormal[1]*cv[i][1] + viewnormal[2]*cv[i][2]); */ /* UNUSED */ ds = (fabsf(viewnormal[0]) * size[0] + fabsf(viewnormal[1]) * size[1] + fabsf(viewnormal[2]) * size[2]); dd = max_fff(sds->global_size[0], sds->global_size[1], sds->global_size[2]) / 128.f; n = 0; good_index = i; // printf("d0: %f, dd: %f, ds: %f\n\n", d0, dd, ds); points = MEM_callocN(sizeof(float) * 12 * 3, "smoke_points_preview"); while (1) { float p0[3]; float tmp_point[3], tmp_point2[3]; if (dd * (float)n > ds) break; copy_v3_v3(tmp_point, viewnormal); mul_v3_fl(tmp_point, -dd * ((ds / dd) - (float)n)); add_v3_v3v3(tmp_point2, cv[good_index], tmp_point); d = dot_v3v3(tmp_point2, viewnormal); // printf("my d: %f\n", d); /* intersect_edges returns the intersection points of all cube edges with * the given plane that lie within the cube */ numpoints = intersect_edges(points, viewnormal[0], viewnormal[1], viewnormal[2], -d, edges); // printf("points: %d\n", numpoints); if (numpoints > 2) { copy_v3_v3(p0, points); /* sort points to get a convex polygon */ for (i = 1; i < numpoints - 1; i++) { for (j = i + 1; j < numpoints; j++) { if (!convex(p0, viewnormal, &points[j * 3], &points[i * 3])) { float tmp2[3]; copy_v3_v3(tmp2, &points[j * 3]); copy_v3_v3(&points[j * 3], &points[i * 3]); copy_v3_v3(&points[i * 3], tmp2); } } } /* render fire slice */ glBlendFunc(GL_SRC_ALPHA, GL_ONE); glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 2, 1.0, 0.0, 0.0, 0.0); glBegin(GL_POLYGON); glColor3f(1.0, 1.0, 1.0); for (i = 0; i < numpoints; i++) { glTexCoord3d((points[i * 3 + 0] - min[0]) * cor[0] / size[0], (points[i * 3 + 1] - min[1]) * cor[1] / size[1], (points[i * 3 + 2] - min[2]) * cor[2] / size[2]); glVertex3f(points[i * 3 + 0] / fabsf(ob->size[0]), points[i * 3 + 1] / fabsf(ob->size[1]), points[i * 3 + 2] / fabsf(ob->size[2])); } glEnd(); /* render smoke slice */ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 2, -1.0, 0.0, 0.0, 0.0); glBegin(GL_POLYGON); glColor3f(1.0, 1.0, 1.0); for (i = 0; i < numpoints; i++) { glTexCoord3d((points[i * 3 + 0] - min[0]) * cor[0] / size[0], (points[i * 3 + 1] - min[1]) * cor[1] / size[1], (points[i * 3 + 2] - min[2]) * cor[2] / size[2]); glVertex3f(points[i * 3 + 0] / fabsf(ob->size[0]), points[i * 3 + 1] / fabsf(ob->size[1]), points[i * 3 + 2] / fabsf(ob->size[2])); } glEnd(); } n++; } #ifdef DEBUG_DRAW_TIME printf("Draw Time: %f\n", (float)TIMEIT_VALUE(draw)); TIMEIT_END(draw); #endif if (tex_shadow) GPU_texture_unbind(tex_shadow); GPU_texture_unbind(tex); if (tex_flame) { GPU_texture_unbind(tex_flame); GPU_texture_unbind(tex_spec); } GPU_texture_free(tex_spec); free(spec_data); free(spec_pixels); if (GLEW_ARB_fragment_program) { glDisable(GL_FRAGMENT_PROGRAM_ARB); glDeleteProgramsARB(1, &prog); } MEM_freeN(points); if (!gl_blend) { glDisable(GL_BLEND); } if (gl_depth) { glEnable(GL_DEPTH_TEST); glDepthMask(GL_TRUE); } }
static GPUTexture *GPU_texture_create_nD( int w, int h, int n, const float *fpixels, int depth, GPUHDRType hdr_type, int components, int samples, char err_out[256]) { GLenum type, format, internalformat; void *pixels = NULL; if (samples) { CLAMP_MAX(samples, GPU_max_color_texture_samples()); } GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); tex->w = w; tex->h = h; tex->number = -1; tex->refcount = 1; tex->target = (n == 1) ? GL_TEXTURE_1D : (samples ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D); tex->target_base = (n == 1) ? GL_TEXTURE_1D : GL_TEXTURE_2D; tex->depth = depth; tex->fb_attachment = -1; glGenTextures(1, &tex->bindcode); if (!tex->bindcode) { if (err_out) { BLI_snprintf(err_out, 256, "GPUTexture: texture create failed: %d", (int)glGetError()); } else { fprintf(stderr, "GPUTexture: texture create failed: %d\n", (int)glGetError()); } GPU_texture_free(tex); return NULL; } if (!GPU_full_non_power_of_two_support()) { tex->w = power_of_2_max_i(tex->w); tex->h = power_of_2_max_i(tex->h); } tex->number = 0; glBindTexture(tex->target, tex->bindcode); if (depth) { type = GL_UNSIGNED_BYTE; format = GL_DEPTH_COMPONENT; internalformat = GL_DEPTH_COMPONENT; } else { type = GL_FLOAT; if (components == 4) { format = GL_RGBA; switch (hdr_type) { case GPU_HDR_NONE: internalformat = GL_RGBA8; break; /* the following formats rely on ARB_texture_float or OpenGL 3.0 */ case GPU_HDR_HALF_FLOAT: internalformat = GL_RGBA16F_ARB; break; case GPU_HDR_FULL_FLOAT: internalformat = GL_RGBA32F_ARB; break; default: break; } } else if (components == 2) { /* these formats rely on ARB_texture_rg or OpenGL 3.0 */ format = GL_RG; switch (hdr_type) { case GPU_HDR_NONE: internalformat = GL_RG8; break; case GPU_HDR_HALF_FLOAT: internalformat = GL_RG16F; break; case GPU_HDR_FULL_FLOAT: internalformat = GL_RG32F; break; default: break; } } if (fpixels && hdr_type == GPU_HDR_NONE) { type = GL_UNSIGNED_BYTE; pixels = GPU_texture_convert_pixels(w * h, fpixels); } } if (tex->target == GL_TEXTURE_1D) { glTexImage1D(tex->target, 0, internalformat, tex->w, 0, format, type, NULL); if (fpixels) { glTexSubImage1D(tex->target, 0, 0, w, format, type, pixels ? pixels : fpixels); if (tex->w > w) { GPU_glTexSubImageEmpty(tex->target, format, w, 0, tex->w - w, 1); } } } else { if (samples) { glTexImage2DMultisample(tex->target, samples, internalformat, tex->w, tex->h, true); } else { glTexImage2D(tex->target, 0, internalformat, tex->w, tex->h, 0, format, type, NULL); } if (fpixels) { glTexSubImage2D(tex->target, 0, 0, 0, w, h, format, type, pixels ? pixels : fpixels); if (tex->w > w) GPU_glTexSubImageEmpty(tex->target, format, w, 0, tex->w - w, tex->h); if (tex->h > h) GPU_glTexSubImageEmpty(tex->target, format, 0, h, w, tex->h - h); } } if (pixels) MEM_freeN(pixels); if (depth) { glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE); glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL); glTexParameteri(tex->target_base, GL_DEPTH_TEXTURE_MODE, GL_INTENSITY); } else { glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, GL_LINEAR); } if (tex->target_base != GL_TEXTURE_1D) { glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); } else glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); return tex; }