/* Init Textures, Framebuffers, Storage and Shaders.
* It is called for every frames.
* (Optional) */
static void EDIT_TEXT_engine_init(void *vedata)
{
EDIT_TEXT_TextureList *txl = ((EDIT_TEXT_Data *)vedata)->txl;
EDIT_TEXT_FramebufferList *fbl = ((EDIT_TEXT_Data *)vedata)->fbl;
EDIT_TEXT_StorageList *stl = ((EDIT_TEXT_Data *)vedata)->stl;
UNUSED_VARS(txl, fbl, stl);
/* Init Framebuffers like this: order is attachment order (for color texs) */
/*
* DRWFboTexture tex[2] = {{&txl->depth, GPU_DEPTH_COMPONENT24, 0},
* {&txl->color, GPU_RGBA8, DRW_TEX_FILTER}};
*/
/* DRW_framebuffer_init takes care of checking if
* the framebuffer is valid and has the right size*/
/*
* float *viewport_size = DRW_viewport_size_get();
* DRW_framebuffer_init(&fbl->occlude_wire_fb,
* (int)viewport_size[0], (int)viewport_size[1],
* tex, 2);
*/
if (!e_data.wire_sh) {
e_data.wire_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_UNIFORM_COLOR);
}
if (!e_data.overlay_select_sh) {
e_data.overlay_select_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_UNIFORM_COLOR);
}
if (!e_data.overlay_cursor_sh) {
e_data.overlay_cursor_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_UNIFORM_COLOR);
}
}
void GPU_framebuffer_blur(GPUFrameBuffer *fb, GPUTexture *tex, GPUFrameBuffer *blurfb, GPUTexture *blurtex)
{
float scaleh[2] = {1.0f/GPU_texture_opengl_width(blurtex), 0.0f};
float scalev[2] = {0.0f, 1.0f/GPU_texture_opengl_height(tex)};
GPUShader *blur_shader = GPU_shader_get_builtin_shader(GPU_SHADER_SEP_GAUSSIAN_BLUR);
int scale_uniform, texture_source_uniform;
if (!blur_shader)
return;
scale_uniform = GPU_shader_get_uniform(blur_shader, "ScaleU");
texture_source_uniform = GPU_shader_get_uniform(blur_shader, "textureSource");
/* Blurring horizontally */
/* We do the bind ourselves rather than using GPU_framebuffer_texture_bind() to avoid
* pushing unnecessary matrices onto the OpenGL stack. */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, blurfb->object);
GPU_shader_bind(blur_shader);
GPU_shader_uniform_vector(blur_shader, scale_uniform, 2, 1, (float *)scaleh);
GPU_shader_uniform_texture(blur_shader, texture_source_uniform, tex);
glViewport(0, 0, GPU_texture_opengl_width(blurtex), GPU_texture_opengl_height(blurtex));
/* Peparing to draw quad */
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
GPU_texture_bind(tex, 0);
/* Drawing quad */
glBegin(GL_QUADS);
glTexCoord2d(0, 0); glVertex2f(1, 1);
glTexCoord2d(1, 0); glVertex2f(-1, 1);
glTexCoord2d(1, 1); glVertex2f(-1, -1);
glTexCoord2d(0, 1); glVertex2f(1, -1);
glEnd();
/* Blurring vertically */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb->object);
glViewport(0, 0, GPU_texture_opengl_width(tex), GPU_texture_opengl_height(tex));
GPU_shader_uniform_vector(blur_shader, scale_uniform, 2, 1, (float *)scalev);
GPU_shader_uniform_texture(blur_shader, texture_source_uniform, blurtex);
GPU_texture_bind(blurtex, 0);
glBegin(GL_QUADS);
glTexCoord2d(0, 0); glVertex2f(1, 1);
glTexCoord2d(1, 0); glVertex2f(-1, 1);
glTexCoord2d(1, 1); glVertex2f(-1, -1);
glTexCoord2d(0, 1); glVertex2f(1, -1);
glEnd();
GPU_shader_unbind();
}
void draw_smoke_volume(SmokeDomainSettings *sds, Object *ob,
const float min[3], const float max[3],
const float viewnormal[3])
{
if (!sds->tex || !sds->tex_shadow) {
fprintf(stderr, "Could not allocate 3D texture for volume rendering!\n");
return;
}
const bool use_fire = (sds->active_fields & SM_ACTIVE_FIRE) && sds->tex_flame;
GPUShader *shader = GPU_shader_get_builtin_shader(
(use_fire) ? GPU_SHADER_SMOKE_FIRE : GPU_SHADER_SMOKE);
if (!shader) {
fprintf(stderr, "Unable to create GLSL smoke shader.\n");
return;
}
const float ob_sizei[3] = {
1.0f / fabsf(ob->size[0]),
1.0f / fabsf(ob->size[1]),
1.0f / fabsf(ob->size[2])
};
const float size[3] = { max[0] - min[0], max[1] - min[1], max[2] - min[2] };
const float invsize[3] = { 1.0f / size[0], 1.0f / size[1], 1.0f / size[2] };
#ifdef DEBUG_DRAW_TIME
TIMEIT_START(draw);
#endif
/* setup smoke shader */
int soot_location = GPU_shader_get_uniform(shader, "soot_texture");
int spec_location = GPU_shader_get_uniform(shader, "spectrum_texture");
int shadow_location = GPU_shader_get_uniform(shader, "shadow_texture");
int flame_location = GPU_shader_get_uniform(shader, "flame_texture");
int actcol_location = GPU_shader_get_uniform(shader, "active_color");
int stepsize_location = GPU_shader_get_uniform(shader, "step_size");
int densityscale_location = GPU_shader_get_uniform(shader, "density_scale");
int invsize_location = GPU_shader_get_uniform(shader, "invsize");
int ob_sizei_location = GPU_shader_get_uniform(shader, "ob_sizei");
int min_location = GPU_shader_get_uniform(shader, "min");
GPU_shader_bind(shader);
GPU_texture_bind(sds->tex, 0);
GPU_shader_uniform_texture(shader, soot_location, sds->tex);
GPU_texture_bind(sds->tex_shadow, 1);
GPU_shader_uniform_texture(shader, shadow_location, sds->tex_shadow);
GPUTexture *tex_spec = NULL;
if (use_fire) {
GPU_texture_bind(sds->tex_flame, 2);
GPU_shader_uniform_texture(shader, flame_location, sds->tex_flame);
tex_spec = create_flame_spectrum_texture();
GPU_texture_bind(tex_spec, 3);
GPU_shader_uniform_texture(shader, spec_location, tex_spec);
}
float active_color[3] = { 0.9, 0.9, 0.9 };
float density_scale = 10.0f;
if ((sds->active_fields & SM_ACTIVE_COLORS) == 0)
mul_v3_v3(active_color, sds->active_color);
GPU_shader_uniform_vector(shader, actcol_location, 3, 1, active_color);
GPU_shader_uniform_vector(shader, stepsize_location, 1, 1, &sds->dx);
GPU_shader_uniform_vector(shader, densityscale_location, 1, 1, &density_scale);
GPU_shader_uniform_vector(shader, min_location, 3, 1, min);
GPU_shader_uniform_vector(shader, ob_sizei_location, 3, 1, ob_sizei);
GPU_shader_uniform_vector(shader, invsize_location, 3, 1, invsize);
/* setup slicing information */
const int max_slices = 256;
const int max_points = max_slices * 12;
VolumeSlicer slicer;
copy_v3_v3(slicer.min, min);
copy_v3_v3(slicer.max, max);
copy_v3_v3(slicer.size, size);
slicer.verts = MEM_mallocN(sizeof(float) * 3 * max_points, "smoke_slice_vertices");
const int num_points = create_view_aligned_slices(&slicer, max_slices, viewnormal);
/* setup buffer and draw */
int gl_depth = 0, gl_blend = 0;
glGetBooleanv(GL_BLEND, (GLboolean *)&gl_blend);
glGetBooleanv(GL_DEPTH_TEST, (GLboolean *)&gl_depth);
glEnable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
GLuint vertex_buffer;
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 3 * num_points, &slicer.verts[0][0], GL_STATIC_DRAW);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, NULL);
glDrawArrays(GL_TRIANGLES, 0, num_points);
glDisableClientState(GL_VERTEX_ARRAY);
#ifdef DEBUG_DRAW_TIME
printf("Draw Time: %f\n", (float)TIMEIT_VALUE(draw));
TIMEIT_END(draw);
#endif
/* cleanup */
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &vertex_buffer);
GPU_texture_unbind(sds->tex);
GPU_texture_unbind(sds->tex_shadow);
if (use_fire) {
GPU_texture_unbind(sds->tex_flame);
GPU_texture_unbind(tex_spec);
GPU_texture_free(tex_spec);
}
MEM_freeN(slicer.verts);
GPU_shader_unbind();
if (!gl_blend) {
glDisable(GL_BLEND);
}
if (gl_depth) {
glEnable(GL_DEPTH_TEST);
}
}
void DRW_draw_cursor(void)
{
const DRWContextState *draw_ctx = DRW_context_state_get();
ARegion *ar = draw_ctx->ar;
Scene *scene = draw_ctx->scene;
ViewLayer *view_layer = draw_ctx->view_layer;
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glDepthMask(GL_FALSE);
glDisable(GL_DEPTH_TEST);
if (is_cursor_visible(draw_ctx, scene, view_layer)) {
int co[2];
/* Get cursor data into quaternion form */
const View3DCursor *cursor = &scene->cursor;
if (ED_view3d_project_int_global(
ar, cursor->location, co, V3D_PROJ_TEST_NOP | V3D_PROJ_TEST_CLIP_NEAR) ==
V3D_PROJ_RET_OK) {
RegionView3D *rv3d = ar->regiondata;
float cursor_quat[4];
BKE_scene_cursor_rot_to_quat(cursor, cursor_quat);
/* Draw nice Anti Aliased cursor. */
GPU_line_width(1.0f);
GPU_blend(true);
GPU_line_smooth(true);
float eps = 1e-5f;
rv3d->viewquat[0] = -rv3d->viewquat[0];
bool is_aligned = compare_v4v4(cursor_quat, rv3d->viewquat, eps);
if (is_aligned == false) {
float tquat[4];
rotation_between_quats_to_quat(tquat, rv3d->viewquat, cursor_quat);
is_aligned = tquat[0] - eps < -1.0f;
}
rv3d->viewquat[0] = -rv3d->viewquat[0];
/* Draw lines */
if (is_aligned == false) {
uint pos = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
immUniformThemeColor3(TH_VIEW_OVERLAY);
immBegin(GPU_PRIM_LINES, 12);
const float scale = ED_view3d_pixel_size_no_ui_scale(rv3d, cursor->location) *
U.widget_unit;
#define CURSOR_VERT(axis_vec, axis, fac) \
immVertex3f(pos, \
cursor->location[0] + axis_vec[0] * (fac), \
cursor->location[1] + axis_vec[1] * (fac), \
cursor->location[2] + axis_vec[2] * (fac))
#define CURSOR_EDGE(axis_vec, axis, sign) \
{ \
CURSOR_VERT(axis_vec, axis, sign 1.0f); \
CURSOR_VERT(axis_vec, axis, sign 0.25f); \
} \
((void)0)
for (int axis = 0; axis < 3; axis++) {
float axis_vec[3] = {0};
axis_vec[axis] = scale;
mul_qt_v3(cursor_quat, axis_vec);
CURSOR_EDGE(axis_vec, axis, +);
CURSOR_EDGE(axis_vec, axis, -);
}
#undef CURSOR_VERT
#undef CURSOR_EDGE
immEnd();
immUnbindProgram();
}
float original_proj[4][4];
GPU_matrix_projection_get(original_proj);
GPU_matrix_push();
ED_region_pixelspace(ar);
GPU_matrix_translate_2f(co[0] + 0.5f, co[1] + 0.5f);
GPU_matrix_scale_2f(U.widget_unit, U.widget_unit);
GPUBatch *cursor_batch = DRW_cache_cursor_get(is_aligned);
GPUShader *shader = GPU_shader_get_builtin_shader(GPU_SHADER_2D_FLAT_COLOR);
GPU_batch_program_set(
cursor_batch, GPU_shader_get_program(shader), GPU_shader_get_interface(shader));
GPU_batch_draw(cursor_batch);
GPU_blend(false);
GPU_line_smooth(false);
GPU_matrix_pop();
GPU_matrix_projection_set(original_proj);
}
void draw_smoke_volume(SmokeDomainSettings *sds, Object *ob,
const float min[3], const float max[3],
const float viewnormal[3])
{
if (!sds->tex || !sds->tex_shadow) {
fprintf(stderr, "Could not allocate 3D texture for volume rendering!\n");
return;
}
const bool use_fire = (sds->active_fields & SM_ACTIVE_FIRE) && sds->tex_flame;
GPUShader *shader = GPU_shader_get_builtin_shader(GPU_SHADER_SMOKE);
if (!shader) {
fprintf(stderr, "Unable to create GLSL smoke shader.\n");
return;
}
GPUShader *fire_shader = NULL;
if (use_fire) {
fire_shader = GPU_shader_get_builtin_shader(GPU_SHADER_SMOKE_FIRE);
if (!fire_shader) {
fprintf(stderr, "Unable to create GLSL fire shader.\n");
return;
}
}
const float ob_sizei[3] = {
1.0f / fabsf(ob->size[0]),
1.0f / fabsf(ob->size[1]),
1.0f / fabsf(ob->size[2])
};
const float size[3] = { max[0] - min[0], max[1] - min[1], max[2] - min[2] };
const float invsize[3] = { 1.0f / size[0], 1.0f / size[1], 1.0f / size[2] };
#ifdef DEBUG_DRAW_TIME
TIMEIT_START(draw);
#endif
/* setup slicing information */
const int max_slices = 256;
const int max_points = max_slices * 12;
VolumeSlicer slicer;
copy_v3_v3(slicer.min, min);
copy_v3_v3(slicer.max, max);
copy_v3_v3(slicer.size, size);
slicer.verts = MEM_mallocN(sizeof(float) * 3 * max_points, "smoke_slice_vertices");
const int num_points = create_view_aligned_slices(&slicer, max_slices, viewnormal);
/* setup buffer and draw */
int gl_depth = 0, gl_blend = 0, gl_depth_write = 0;
glGetBooleanv(GL_BLEND, (GLboolean *)&gl_blend);
glGetBooleanv(GL_DEPTH_TEST, (GLboolean *)&gl_depth);
glGetBooleanv(GL_DEPTH_WRITEMASK, (GLboolean *)&gl_depth_write);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
draw_buffer(sds, shader, &slicer, ob_sizei, invsize, num_points, false);
/* Draw fire separately (T47639). */
if (use_fire) {
glBlendFunc(GL_ONE, GL_ONE);
draw_buffer(sds, fire_shader, &slicer, ob_sizei, invsize, num_points, true);
}
#ifdef DEBUG_DRAW_TIME
printf("Draw Time: %f\n", (float)TIMEIT_VALUE(draw));
TIMEIT_END(draw);
#endif
MEM_freeN(slicer.verts);
glDepthMask(gl_depth_write);
if (!gl_blend) {
glDisable(GL_BLEND);
}
if (gl_depth) {
glEnable(GL_DEPTH_TEST);
}
}
void wm_draw_region_blend(ARegion *ar, int view, bool blend)
{
if (!ar->draw_buffer) {
return;
}
/* Alpha is always 1, except when blend timer is running. */
float alpha = ED_region_blend_alpha(ar);
if (alpha <= 0.0f) {
return;
}
if (!blend) {
alpha = 1.0f;
}
/* setup actual texture */
GPUTexture *texture = wm_draw_region_texture(ar, view);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, GPU_texture_opengl_bindcode(texture));
/* wmOrtho for the screen has this same offset */
const float halfx = GLA_PIXEL_OFS / (BLI_rcti_size_x(&ar->winrct) + 1);
const float halfy = GLA_PIXEL_OFS / (BLI_rcti_size_y(&ar->winrct) + 1);
if (blend) {
/* GL_ONE because regions drawn offscreen have premultiplied alpha. */
GPU_blend(true);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
}
GPUShader *shader = GPU_shader_get_builtin_shader(GPU_SHADER_2D_IMAGE_RECT_COLOR);
GPU_shader_bind(shader);
rcti rect_geo = ar->winrct;
rect_geo.xmax += 1;
rect_geo.ymax += 1;
rctf rect_tex;
rect_tex.xmin = halfx;
rect_tex.ymin = halfy;
rect_tex.xmax = 1.0f + halfx;
rect_tex.ymax = 1.0f + halfy;
float alpha_easing = 1.0f - alpha;
alpha_easing = 1.0f - alpha_easing * alpha_easing;
/* Slide vertical panels */
float ofs_x = BLI_rcti_size_x(&ar->winrct) * (1.0f - alpha_easing);
if (ar->alignment == RGN_ALIGN_RIGHT) {
rect_geo.xmin += ofs_x;
rect_tex.xmax *= alpha_easing;
alpha = 1.0f;
}
else if (ar->alignment == RGN_ALIGN_LEFT) {
rect_geo.xmax -= ofs_x;
rect_tex.xmin += 1.0f - alpha_easing;
alpha = 1.0f;
}
glUniform1i(GPU_shader_get_uniform_ensure(shader, "image"), 0);
glUniform4f(GPU_shader_get_uniform_ensure(shader, "rect_icon"),
rect_tex.xmin,
rect_tex.ymin,
rect_tex.xmax,
rect_tex.ymax);
glUniform4f(GPU_shader_get_uniform_ensure(shader, "rect_geom"),
rect_geo.xmin,
rect_geo.ymin,
rect_geo.xmax,
rect_geo.ymax);
glUniform4f(
GPU_shader_get_builtin_uniform(shader, GPU_UNIFORM_COLOR), alpha, alpha, alpha, alpha);
GPU_draw_primitive(GPU_PRIM_TRI_STRIP, 4);
glBindTexture(GL_TEXTURE_2D, 0);
if (blend) {
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
GPU_blend(false);
}
}