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Differential D7831 Diff 25242 source/blender/gpu/intern/gpu_texture.c

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source/blender/gpu/intern/gpu_texture.c

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#include "gpu_context_private.h" #include "gpu_context_private.h"
static struct GPUTextureGlobal { static struct GPUTextureGlobal {
/** Texture used in place of invalid textures (not loaded correctly, missing). */ /** Texture used in place of invalid textures (not loaded correctly, missing). */
GPUTexture *invalid_tex_1D; GPUTexture *invalid_tex_1D;
GPUTexture *invalid_tex_2D; GPUTexture *invalid_tex_2D;
GPUTexture *invalid_tex_3D; GPUTexture *invalid_tex_3D;
} GG = {NULL, NULL, NULL}; /** Sampler objects used to replace internal texture parameters. */
GLuint samplers[GPU_SAMPLER_MAX];
} GG = {NULL};
/* Maximum number of FBOs a texture can be attached to. */ /* Maximum number of FBOs a texture can be attached to. */
#define GPU_TEX_MAX_FBO_ATTACHED 12 #define GPU_TEX_MAX_FBO_ATTACHED 12
/* Maximum number of texture unit a texture can be attached to. */
#define GPU_TEX_MAX_BIND 4
typedef enum eGPUTextureFormatFlag { typedef enum eGPUTextureFormatFlag {
GPU_FORMAT_DEPTH = (1 << 0), GPU_FORMAT_DEPTH = (1 << 0),
GPU_FORMAT_STENCIL = (1 << 1), GPU_FORMAT_STENCIL = (1 << 1),
GPU_FORMAT_INTEGER = (1 << 2), GPU_FORMAT_INTEGER = (1 << 2),
GPU_FORMAT_FLOAT = (1 << 3), GPU_FORMAT_FLOAT = (1 << 3),
GPU_FORMAT_1D = (1 << 10), GPU_FORMAT_1D = (1 << 10),
GPU_FORMAT_2D = (1 << 11), GPU_FORMAT_2D = (1 << 11),
GPU_FORMAT_3D = (1 << 12), GPU_FORMAT_3D = (1 << 12),
GPU_FORMAT_CUBE = (1 << 13), GPU_FORMAT_CUBE = (1 << 13),
GPU_FORMAT_ARRAY = (1 << 14), GPU_FORMAT_ARRAY = (1 << 14),
} eGPUTextureFormatFlag; } eGPUTextureFormatFlag;
/* GPUTexture */ /* GPUTexture */
struct GPUTexture { struct GPUTexture {
int w, h, d; /* width/height/depth */ int w, h, d; /* width/height/depth */
int orig_w, orig_h; /* width/height (of source data), optional. */ int orig_w, orig_h; /* width/height (of source data), optional. */
int number; /* number for multitexture binding */ int number[GPU_TEX_MAX_BIND]; /* Texture unit(s) to which this texture is bound. */
int refcount; /* reference count */ int refcount; /* reference count */
GLenum target; /* GL_TEXTURE_* */ GLenum target; /* GL_TEXTURE_* */
GLenum target_base; /* same as target, (but no multisample) GLenum target_base; /* same as target, (but no multisample)
* use it for unbinding */ * use it for unbinding */
GLuint bindcode; /* opengl identifier for texture */ GLuint bindcode; /* opengl identifier for texture */
eGPUTextureFormat format; eGPUTextureFormat format;
eGPUTextureFormatFlag format_flag; eGPUTextureFormatFlag format_flag;
eGPUSamplerState sampler_state; /* Internal Sampler state. */
int mipmaps; /* number of mipmaps */ int mipmaps; /* number of mipmaps */
int components; /* number of color/alpha channels */ int components; /* number of color/alpha channels */
int samples; /* number of samples for multisamples textures. 0 if not multisample target */ int samples; /* number of samples for multisamples textures. 0 if not multisample target */
int fb_attachment[GPU_TEX_MAX_FBO_ATTACHED]; int fb_attachment[GPU_TEX_MAX_FBO_ATTACHED];
GPUFrameBuffer *fb[GPU_TEX_MAX_FBO_ATTACHED]; GPUFrameBuffer *fb[GPU_TEX_MAX_FBO_ATTACHED];
/* Legacy workaround for texture copy. */ /* Legacy workaround for texture copy. */
▲ Show 20 Lines • Show All 730 Lines • ▼ Show 20 Lines if ((tex_format == GPU_DEPTH24_STENCIL8) && GPU_depth_blitting_workaround()) {
tex_format = GPU_DEPTH32F_STENCIL8; tex_format = GPU_DEPTH32F_STENCIL8;
} }
GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture");
tex->w = w; tex->w = w;
tex->h = h; tex->h = h;
tex->d = d; tex->d = d;
tex->samples = samples; tex->samples = samples;
tex->number = -1;
tex->refcount = 1; tex->refcount = 1;
tex->format = tex_format; tex->format = tex_format;
tex->components = gpu_get_component_count(tex_format); tex->components = gpu_get_component_count(tex_format);
tex->mipmaps = 0; tex->mipmaps = 0;
tex->format_flag = 0; tex->format_flag = 0;
for (int i = 0; i < GPU_TEX_MAX_BIND; i++) {
tex->number[i] = -1;
}
if (n == 2) { if (n == 2) {
if (d == 0) { if (d == 0) {
tex->target_base = tex->target = GL_TEXTURE_2D; tex->target_base = tex->target = GL_TEXTURE_2D;
} }
else { else {
tex->target_base = tex->target = GL_TEXTURE_2D_ARRAY; tex->target_base = tex->target = GL_TEXTURE_2D_ARRAY;
tex->format_flag |= GPU_FORMAT_ARRAY; tex->format_flag |= GPU_FORMAT_ARRAY;
▲ Show 20 Lines • Show All 127 Lines • ▼ Show 20 LinesGPUTexture *GPU_texture_create_nD(int w,
if (rescaled_pixels) { if (rescaled_pixels) {
MEM_freeN(rescaled_pixels); MEM_freeN(rescaled_pixels);
} }
/* Texture Parameters */ /* Texture Parameters */
if (GPU_texture_stencil(tex) || /* Does not support filtering */ if (GPU_texture_stencil(tex) || /* Does not support filtering */
GPU_texture_integer(tex) || /* Does not support filtering */ GPU_texture_integer(tex) || /* Does not support filtering */
GPU_texture_depth(tex)) { GPU_texture_depth(tex)) {
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_NEAREST); tex->sampler_state = GPU_SAMPLER_DEFAULT & ~GPU_SAMPLER_FILTER;
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
} }
else { else {
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_LINEAR); tex->sampler_state = GPU_SAMPLER_DEFAULT;
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
if (GPU_texture_depth(tex)) {
glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_MODE, GL_NONE);
glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
}
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
if (n > 1) {
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
if (n > 2) {
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
} }
/* Avoid issue with incomplete textures. */
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glBindTexture(tex->target, 0); glBindTexture(tex->target, 0);
return tex; return tex;
} }
GPUTexture *GPU_texture_cube_create(int w, GPUTexture *GPU_texture_cube_create(int w,
int d, int d,
const void *pixels, const void *pixels,
eGPUTextureFormat tex_format, eGPUTextureFormat tex_format,
eGPUDataFormat gpu_data_format, eGPUDataFormat gpu_data_format,
char err_out[256]) char err_out[256])
{ {
GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture");
tex->w = w; tex->w = w;
tex->h = w; tex->h = w;
tex->d = d; tex->d = d;
tex->samples = 0; tex->samples = 0;
tex->number = -1;
tex->refcount = 1; tex->refcount = 1;
tex->format = tex_format; tex->format = tex_format;
tex->components = gpu_get_component_count(tex_format); tex->components = gpu_get_component_count(tex_format);
tex->mipmaps = 0; tex->mipmaps = 0;
tex->format_flag = GPU_FORMAT_CUBE; tex->format_flag = GPU_FORMAT_CUBE;
for (int i = 0; i < GPU_TEX_MAX_BIND; i++) {
tex->number[i] = -1;
}
if (d == 0) { if (d == 0) {
tex->target_base = tex->target = GL_TEXTURE_CUBE_MAP; tex->target_base = tex->target = GL_TEXTURE_CUBE_MAP;
} }
else { else {
tex->target_base = tex->target = GL_TEXTURE_CUBE_MAP_ARRAY_ARB; tex->target_base = tex->target = GL_TEXTURE_CUBE_MAP_ARRAY_ARB;
tex->format_flag |= GPU_FORMAT_ARRAY; tex->format_flag |= GPU_FORMAT_ARRAY;
▲ Show 20 Lines • Show All 81 Lines • ▼ Show 20 Lines glTexImage3D(tex->target,
data_type, data_type,
pixels); pixels);
} }
/* Texture Parameters */ /* Texture Parameters */
if (GPU_texture_stencil(tex) || /* Does not support filtering */ if (GPU_texture_stencil(tex) || /* Does not support filtering */
GPU_texture_integer(tex) || /* Does not support filtering */ GPU_texture_integer(tex) || /* Does not support filtering */
GPU_texture_depth(tex)) { GPU_texture_depth(tex)) {
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_NEAREST); tex->sampler_state = GPU_SAMPLER_DEFAULT & ~GPU_SAMPLER_FILTER;
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
} }
else { else {
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_LINEAR); tex->sampler_state = GPU_SAMPLER_DEFAULT;
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
} }
/* Avoid issue with incomplete textures. */
if (GPU_texture_depth(tex)) { glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_MODE, GL_NONE);
glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
}
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glBindTexture(tex->target, 0); glBindTexture(tex->target, 0);
return tex; return tex;
} }
/* Special buffer textures. tex_format must be compatible with the buffer content. */ /* Special buffer textures. tex_format must be compatible with the buffer content. */
GPUTexture *GPU_texture_create_buffer(eGPUTextureFormat tex_format, const GLuint buffer) GPUTexture *GPU_texture_create_buffer(eGPUTextureFormat tex_format, const GLuint buffer)
{ {
GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture");
tex->number = -1;
tex->refcount = 1; tex->refcount = 1;
tex->format = tex_format; tex->format = tex_format;
tex->components = gpu_get_component_count(tex_format); tex->components = gpu_get_component_count(tex_format);
tex->format_flag = 0; tex->format_flag = 0;
tex->target_base = tex->target = GL_TEXTURE_BUFFER; tex->target_base = tex->target = GL_TEXTURE_BUFFER;
tex->mipmaps = 0; tex->mipmaps = 0;
for (int i = 0; i < GPU_TEX_MAX_BIND; i++) {
tex->number[i] = -1;
}
GLenum internalformat = gpu_format_to_gl_internalformat(tex_format); GLenum internalformat = gpu_format_to_gl_internalformat(tex_format);
gpu_get_gl_dataformat(tex_format, &tex->format_flag); gpu_get_gl_dataformat(tex_format, &tex->format_flag);
if (!(ELEM(tex_format, GPU_R8, GPU_R16) || ELEM(tex_format, GPU_R16F, GPU_R32F) || if (!(ELEM(tex_format, GPU_R8, GPU_R16) || ELEM(tex_format, GPU_R16F, GPU_R32F) ||
ELEM(tex_format, GPU_R8I, GPU_R16I, GPU_R32I) || ELEM(tex_format, GPU_R8I, GPU_R16I, GPU_R32I) ||
ELEM(tex_format, GPU_R8UI, GPU_R16UI, GPU_R32UI) || ELEM(tex_format, GPU_RG8, GPU_RG16) || ELEM(tex_format, GPU_R8UI, GPU_R16UI, GPU_R32UI) || ELEM(tex_format, GPU_RG8, GPU_RG16) ||
ELEM(tex_format, GPU_RG16F, GPU_RG32F) || ELEM(tex_format, GPU_RG16F, GPU_RG32F) ||
Show All 29 LinesGPUTexture *GPU_texture_create_buffer(eGPUTextureFormat tex_format, const GLuint buffer)
return tex; return tex;
} }
GPUTexture *GPU_texture_from_bindcode(int textarget, int bindcode) GPUTexture *GPU_texture_from_bindcode(int textarget, int bindcode)
{ {
GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture"); GPUTexture *tex = MEM_callocN(sizeof(GPUTexture), "GPUTexture");
tex->bindcode = bindcode; tex->bindcode = bindcode;
tex->number = -1;
tex->refcount = 1; tex->refcount = 1;
tex->target = textarget; tex->target = textarget;
tex->target_base = textarget; tex->target_base = textarget;
tex->samples = 0; tex->samples = 0;
tex->sampler_state = GPU_SAMPLER_REPEAT | GPU_SAMPLER_ANISO;
if (GPU_get_mipmap()) {
tex->sampler_state |= (GPU_SAMPLER_MIPMAP | GPU_SAMPLER_FILTER);
}
for (int i = 0; i < GPU_TEX_MAX_BIND; i++) {
tex->number[i] = -1;
}
if (!glIsTexture(tex->bindcode)) { if (!glIsTexture(tex->bindcode)) {
GPU_print_error_debug("Blender Texture Not Loaded"); GPU_print_error_debug("Blender Texture Not Loaded");
} }
else { else {
GLint w, h, gl_format; GLint w, h, gl_format;
GLenum gettarget; GLenum gettarget;
gettarget = (textarget == GL_TEXTURE_CUBE_MAP) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : textarget; gettarget = (textarget == GL_TEXTURE_CUBE_MAP) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : textarget;
▲ Show 20 Lines • Show All 510 Lines • ▼ Show 20 Linesvoid GPU_invalid_tex_free(void)
if (GG.invalid_tex_2D) { if (GG.invalid_tex_2D) {
GPU_texture_free(GG.invalid_tex_2D); GPU_texture_free(GG.invalid_tex_2D);
} }
if (GG.invalid_tex_3D) { if (GG.invalid_tex_3D) {
GPU_texture_free(GG.invalid_tex_3D); GPU_texture_free(GG.invalid_tex_3D);
} }
} }
void GPU_texture_bind(GPUTexture *tex, int number) void GPU_texture_bind(GPUTexture *tex, int unit)
{ {
BLI_assert(number >= 0); BLI_assert(unit >= 0);
if (number >= GPU_max_textures()) { if (unit >= GPU_max_textures()) {
fprintf(stderr, "Not enough texture slots.\n"); fprintf(stderr, "Not enough texture slots.\n");
return; return;
} }
if ((G.debug & G_DEBUG)) { if ((G.debug & G_DEBUG)) {
for (int i = 0; i < GPU_TEX_MAX_FBO_ATTACHED; i++) { for (int i = 0; i < GPU_TEX_MAX_FBO_ATTACHED; i++) {
if (tex->fb[i] && GPU_framebuffer_bound(tex->fb[i])) { if (tex->fb[i] && GPU_framebuffer_bound(tex->fb[i])) {
fprintf(stderr, fprintf(stderr,
"Feedback loop warning!: Attempting to bind " "Feedback loop warning!: Attempting to bind "
"texture attached to current framebuffer!\n"); "texture attached to current framebuffer!\n");
BLI_assert(0); /* Should never happen! */ BLI_assert(0); /* Should never happen! */
break; break;
} }
} }
} }
glActiveTexture(GL_TEXTURE0 + number); for (int i = 0; i < GPU_TEX_MAX_BIND; i++) {
if (tex->number[i] == -1) {
tex->number[i] = unit;
break;
}
else if (tex->number[i] == unit) {
/* Already bound to this unit.
* But might be with another sampler object so we still rebind. */
break;
}
else if (i == GPU_TEX_MAX_BIND - 1) {
fprintf(stderr, "Texture is already bound to its maximum number of sampler units!\n");
BLI_assert(0); /* Should never happen! */
return;
}
}
glActiveTexture(GL_TEXTURE0 + unit);
if (tex->bindcode != 0) { if (tex->bindcode != 0) {
glBindTexture(tex->target, tex->bindcode); glBindTexture(tex->target, tex->bindcode);
glBindSampler(unit, GG.samplers[tex->sampler_state]);
} }
else { else {
GPU_invalid_tex_bind(tex->target_base); GPU_invalid_tex_bind(tex->target_base);
glBindSampler(unit, 0);
} }
tex->number = number;
} }
brechtUnsubmitted
Done
Inline Actions

Assert and print an error when no free texture unit is found?

brecht: Assert and print an error when no free texture unit is found?
void GPU_texture_unbind(GPUTexture *tex) void GPU_texture_unbind(GPUTexture *tex)
{ {
if (tex->number == -1) { for (int i = 0; i < GPU_TEX_MAX_BIND; i++) {
return; if (tex->number[i] != -1) {
} glActiveTexture(GL_TEXTURE0 + tex->number[i]);
glActiveTexture(GL_TEXTURE0 + tex->number);
glBindTexture(tex->target, 0); glBindTexture(tex->target, 0);
glBindSampler(tex->number[i], 0);
tex->number = -1; tex->number[i] = -1;
}
else {
break;
}
}
brechtUnsubmitted
Done
Inline Actions

This early return could be replaced by else { break; } inside the loop below.

brecht: This early return could be replaced by `else { break; }` inside the loop below.
} }
int GPU_texture_bound_number(GPUTexture *tex) int GPU_texture_bound_number(GPUTexture *tex)
{ {
return tex->number; /* TODO remove. Makes no sense now. */
return tex->number[0];
} }
#define WARN_NOT_BOUND(_tex) \ #define WARN_NOT_BOUND(_tex) \
{ \ { \
if (_tex->number == -1) { \ if (_tex->number[0] == -1) { \
fprintf(stderr, "Warning : Trying to set parameter on a texture not bound.\n"); \ fprintf(stderr, "Warning : Trying to set parameter on a texture not bound.\n"); \
BLI_assert(0); \ BLI_assert(0); \
return; \ return; \
} \ } \
} \ } \
((void)0) ((void)0)
void GPU_texture_generate_mipmap(GPUTexture *tex) void GPU_texture_generate_mipmap(GPUTexture *tex)
{ {
WARN_NOT_BOUND(tex); WARN_NOT_BOUND(tex);
gpu_texture_memory_footprint_remove(tex); gpu_texture_memory_footprint_remove(tex);
int levels = 1 + floor(log2(max_ii(tex->w, tex->h))); int levels = 1 + floor(log2(max_ii(tex->w, tex->h)));
glActiveTexture(GL_TEXTURE0 + tex->number); glActiveTexture(GL_TEXTURE0 + tex->number[0]);
if (GPU_texture_depth(tex)) { if (GPU_texture_depth(tex)) {
/* Some drivers have bugs when using glGenerateMipmap with depth textures (see T56789). /* Some drivers have bugs when using glGenerateMipmap with depth textures (see T56789).
* In this case we just create a complete texture with mipmaps manually without down-sampling. * In this case we just create a complete texture with mipmaps manually without down-sampling.
* You must initialize the texture levels using other methods like * You must initialize the texture levels using other methods like
* GPU_framebuffer_recursive_downsample(). */ * GPU_framebuffer_recursive_downsample(). */
eGPUDataFormat data_format = gpu_get_data_format_from_tex_format(tex->format); eGPUDataFormat data_format = gpu_get_data_format_from_tex_format(tex->format);
for (int i = 1; i < levels; i++) { for (int i = 1; i < levels; i++) {
▲ Show 20 Lines • Show All 94 Lines • ▼ Show 20 Lines else {
if (prev_fb) { if (prev_fb) {
GPU_framebuffer_bind(prev_fb); GPU_framebuffer_bind(prev_fb);
} }
} }
} }
void GPU_texture_compare_mode(GPUTexture *tex, bool use_compare) void GPU_texture_compare_mode(GPUTexture *tex, bool use_compare)
{ {
WARN_NOT_BOUND(tex);
/* Could become an assertion ? (fclem) */ /* Could become an assertion ? (fclem) */
if (!GPU_texture_depth(tex)) { if (!GPU_texture_depth(tex)) {
return; return;
} }
SET_FLAG_FROM_TEST(tex->sampler_state, use_compare, GPU_SAMPLER_COMPARE);
GLenum mode = (use_compare) ? GL_COMPARE_REF_TO_TEXTURE : GL_NONE;
glActiveTexture(GL_TEXTURE0 + tex->number);
glTexParameteri(tex->target_base, GL_TEXTURE_COMPARE_MODE, mode);
} }
void GPU_texture_filter_mode(GPUTexture *tex, bool use_filter) void GPU_texture_filter_mode(GPUTexture *tex, bool use_filter)
{ {
WARN_NOT_BOUND(tex);
/* Stencil and integer format does not support filtering. */ /* Stencil and integer format does not support filtering. */
BLI_assert(!use_filter || !(GPU_texture_stencil(tex) || GPU_texture_integer(tex))); BLI_assert(!use_filter || !(GPU_texture_stencil(tex) || GPU_texture_integer(tex)));
GLenum filter = (use_filter) ? GL_LINEAR : GL_NEAREST; SET_FLAG_FROM_TEST(tex->sampler_state, use_filter, GPU_SAMPLER_FILTER);
glActiveTexture(GL_TEXTURE0 + tex->number);
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, filter);
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, filter);
} }
void GPU_texture_mipmap_mode(GPUTexture *tex, bool use_mipmap, bool use_filter) void GPU_texture_mipmap_mode(GPUTexture *tex, bool use_mipmap, bool use_filter)
{ {
WARN_NOT_BOUND(tex);
/* Stencil and integer format does not support filtering. */ /* Stencil and integer format does not support filtering. */
BLI_assert((!use_filter && !use_mipmap) || BLI_assert(!(use_filter || use_mipmap) ||
!(GPU_texture_stencil(tex) || GPU_texture_integer(tex))); !(GPU_texture_stencil(tex) || GPU_texture_integer(tex)));
GLenum filter = (use_filter) ? GL_LINEAR : GL_NEAREST; SET_FLAG_FROM_TEST(tex->sampler_state, use_mipmap, GPU_SAMPLER_MIPMAP);
GLenum mipmap = ((use_filter) ? (use_mipmap) ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR : SET_FLAG_FROM_TEST(tex->sampler_state, use_filter, GPU_SAMPLER_FILTER);
(use_mipmap) ? GL_NEAREST_MIPMAP_LINEAR : GL_NEAREST);
glActiveTexture(GL_TEXTURE0 + tex->number);
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, mipmap);
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, filter);
} }
void GPU_texture_wrap_mode(GPUTexture *tex, bool use_repeat, bool use_clamp) void GPU_texture_wrap_mode(GPUTexture *tex, bool use_repeat, bool use_clamp)
{ {
WARN_NOT_BOUND(tex); SET_FLAG_FROM_TEST(tex->sampler_state, use_repeat, GPU_SAMPLER_REPEAT);
SET_FLAG_FROM_TEST(tex->sampler_state, !use_clamp, GPU_SAMPLER_CLAMP_BORDER);
GLenum repeat = (use_repeat) ? GL_REPEAT : (use_clamp) ? GL_CLAMP_TO_EDGE : GL_CLAMP_TO_BORDER;
glActiveTexture(GL_TEXTURE0 + tex->number);
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_S, repeat);
if (tex->target_base != GL_TEXTURE_1D) {
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_T, repeat);
}
if (tex->target_base == GL_TEXTURE_3D) {
glTexParameteri(tex->target_base, GL_TEXTURE_WRAP_R, repeat);
}
if (repeat == GL_CLAMP_TO_BORDER) {
const float black[] = {0.0f, 0.0f, 0.0f, 0.0f};
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, black);
}
} }
void GPU_texture_swizzle_channel_auto(GPUTexture *tex, int channels) void GPU_texture_swizzle_channel_auto(GPUTexture *tex, int channels)
{ {
WARN_NOT_BOUND(tex); WARN_NOT_BOUND(tex);
glActiveTexture(GL_TEXTURE0 + tex->number); glActiveTexture(GL_TEXTURE0 + tex->number[0]);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_R, GL_RED); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_R, GL_RED);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_G, (channels >= 2) ? GL_GREEN : GL_RED); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_G, (channels >= 2) ? GL_GREEN : GL_RED);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_B, (channels >= 3) ? GL_BLUE : GL_RED); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_B, (channels >= 3) ? GL_BLUE : GL_RED);
glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_A, (channels >= 4) ? GL_ALPHA : GL_ONE); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_SWIZZLE_A, (channels >= 4) ? GL_ALPHA : GL_ONE);
} }
static GLenum gpu_get_gl_filterfunction(eGPUFilterFunction filter)
{
switch (filter) {
case GPU_NEAREST:
return GL_NEAREST;
case GPU_LINEAR:
return GL_LINEAR;
default:
BLI_assert(!"Unhandled filter mode");
return GL_NEAREST;
}
}
void GPU_texture_filters(GPUTexture *tex,
eGPUFilterFunction min_filter,
eGPUFilterFunction mag_filter)
{
WARN_NOT_BOUND(tex);
/* Stencil and integer format does not support filtering. */
BLI_assert(!(GPU_texture_stencil(tex) || GPU_texture_integer(tex)));
BLI_assert(mag_filter == GPU_NEAREST || mag_filter == GPU_LINEAR);
glActiveTexture(GL_TEXTURE0 + tex->number);
glTexParameteri(tex->target_base, GL_TEXTURE_MIN_FILTER, gpu_get_gl_filterfunction(min_filter));
glTexParameteri(tex->target_base, GL_TEXTURE_MAG_FILTER, gpu_get_gl_filterfunction(mag_filter));
}
void GPU_texture_free(GPUTexture *tex) void GPU_texture_free(GPUTexture *tex)
{ {
tex->refcount--; tex->refcount--;
if (tex->refcount < 0) { if (tex->refcount < 0) {
fprintf(stderr, "GPUTexture: negative refcount\n"); fprintf(stderr, "GPUTexture: negative refcount\n");
} }
▲ Show 20 Lines • Show All 144 Lines • ▼ Show 20 Lines if (GPU_texture_array(tex)) {
if (GPU_texture_cube(tex)) { if (GPU_texture_cube(tex)) {
size[2] *= 6; size[2] *= 6;
} }
} }
else if (tex->d > 0) { else if (tex->d > 0) {
size[2] = max_ii(1, tex->d / div); size[2] = max_ii(1, tex->d / div);
} }
} }
/* -------------------------------------------------------------------- */
/** \name GPU Sampler Objects
*
* Simple wrapper around opengl sampler objects.
* Override texture sampler state for one sampler unit only.
* \{ */
void GPU_samplers_init(void)
{
glGenSamplers(GPU_SAMPLER_MAX, GG.samplers);
for (int i = 0; i < GPU_SAMPLER_MAX; i++) {
eGPUSamplerState state = i;
GLenum clamp_type = (state & GPU_SAMPLER_CLAMP_BORDER) ? GL_CLAMP_TO_BORDER : GL_CLAMP_TO_EDGE;
GLenum wrap_s = (state & GPU_SAMPLER_REPEAT_R) ? GL_REPEAT : clamp_type;
GLenum wrap_t = (state & GPU_SAMPLER_REPEAT_S) ? GL_REPEAT : clamp_type;
GLenum wrap_r = (state & GPU_SAMPLER_REPEAT_T) ? GL_REPEAT : clamp_type;
GLenum mag_filter = (state & GPU_SAMPLER_FILTER) ? GL_LINEAR : GL_NEAREST;
GLenum min_filter = (state & GPU_SAMPLER_FILTER) ?
((state & GPU_SAMPLER_MIPMAP) ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR) :
((state & GPU_SAMPLER_MIPMAP) ? GL_NEAREST_MIPMAP_LINEAR : GL_NEAREST);
GLenum compare_mode = (state & GPU_SAMPLER_COMPARE) ? GL_COMPARE_REF_TO_TEXTURE : GL_NONE;
float aniso_filter = ((state & GPU_SAMPLER_MIPMAP) && (state & GPU_SAMPLER_ANISO)) ?
GPU_get_anisotropic() :
1.0f;
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_WRAP_S, wrap_s);
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_WRAP_T, wrap_t);
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_WRAP_R, wrap_r);
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_MIN_FILTER, min_filter);
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_MAG_FILTER, mag_filter);
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_COMPARE_MODE, compare_mode);
glSamplerParameteri(GG.samplers[i], GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
if (GLEW_EXT_texture_filter_anisotropic) {
glSamplerParameterf(GG.samplers[i], GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso_filter);
}
/** Other states are left to default:
* - GL_TEXTURE_BORDER_COLOR is {0, 0, 0, 0}.
* - GL_TEXTURE_MIN_LOD is -1000.
* - GL_TEXTURE_MAX_LOD is 1000.
* - GL_TEXTURE_LOD_BIAS is 0.0f.
**/
}
}
void GPU_samplers_free(void)
{
glDeleteSamplers(GPU_SAMPLER_MAX, GG.samplers);
}
/** \} */