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DRW: Support edit-curve clipping

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This commit is contained in:
Campbell Barton
2019-02-06 23:19:39 +11:00
parent fea5e1dc3a
commit 3e6ebdd2a6
5 changed files with 96 additions and 34 deletions
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95
source/blender/draw/modes/edit_curve_mode.c
View File

@@ -38,6 +38,7 @@
* Not needed for constant color. */
extern char datatoc_common_globals_lib_glsl[];
extern char datatoc_gpu_shader_cfg_world_clip_lib_glsl[];
extern char datatoc_edit_curve_overlay_loosevert_vert_glsl[];
extern char datatoc_edit_curve_overlay_normals_vert_glsl[];
extern char datatoc_edit_curve_overlay_handle_vert_glsl[];
@@ -75,11 +76,16 @@ typedef struct EDIT_CURVE_Data {
/* *********** STATIC *********** */
static struct {
typedef struct EDIT_CURVE_Shaders {
GPUShader *wire_sh;
GPUShader *wire_normals_sh;
GPUShader *overlay_edge_sh; /* handles and nurbs control cage */
GPUShader *overlay_vert_sh;
} EDIT_CURVE_Shaders;
static struct {
EDIT_CURVE_Shaders sh_data[GPU_SHADER_CFG_LEN];
} e_data = {NULL}; /* Engine data */
typedef struct EDIT_CURVE_PrivateData {
@@ -100,29 +106,46 @@ typedef struct EDIT_CURVE_PrivateData {
* (Optional) */
static void EDIT_CURVE_engine_init(void *UNUSED(vedata))
{
if (!e_data.wire_sh) {
e_data.wire_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_UNIFORM_COLOR);
const DRWContextState *draw_ctx = DRW_context_state_get();
EDIT_CURVE_Shaders *sh_data = &e_data.sh_data[draw_ctx->shader_cfg];
const bool is_clip = (draw_ctx->rv3d->rflag & RV3D_CLIPPING) != 0;
if (is_clip) {
DRW_state_clip_planes_set_from_rv3d(draw_ctx->rv3d);
}
if (!e_data.wire_normals_sh) {
e_data.wire_normals_sh = DRW_shader_create(
datatoc_edit_curve_overlay_normals_vert_glsl, NULL,
datatoc_gpu_shader_uniform_color_frag_glsl, NULL);
const char *world_clip_lib_or_empty = is_clip ? datatoc_gpu_shader_cfg_world_clip_lib_glsl : "";
const char *world_clip_def_or_empty = is_clip ? "#define USE_WORLD_CLIP_PLANES\n" : "";
if (!sh_data->wire_sh) {
sh_data->wire_sh = GPU_shader_get_builtin_shader_with_config(
GPU_SHADER_3D_UNIFORM_COLOR, draw_ctx->shader_cfg);
}
if (!e_data.overlay_edge_sh) {
e_data.overlay_edge_sh = DRW_shader_create_with_lib(
datatoc_edit_curve_overlay_handle_vert_glsl,
datatoc_edit_curve_overlay_handle_geom_glsl,
datatoc_gpu_shader_3D_smooth_color_frag_glsl,
datatoc_common_globals_lib_glsl, NULL);
if (!sh_data->wire_normals_sh) {
sh_data->wire_normals_sh = GPU_shader_create_from_arrays({
.vert = (const char *[]){world_clip_lib_or_empty, datatoc_edit_curve_overlay_normals_vert_glsl, NULL},
.frag = (const char *[]){datatoc_gpu_shader_uniform_color_frag_glsl, NULL},
.defs = (const char *[]){world_clip_def_or_empty, NULL},
});
}
if (!e_data.overlay_vert_sh) {
e_data.overlay_vert_sh = DRW_shader_create_with_lib(
datatoc_edit_curve_overlay_loosevert_vert_glsl, NULL,
datatoc_gpu_shader_point_varying_color_frag_glsl,
datatoc_common_globals_lib_glsl, NULL);
if (!sh_data->overlay_edge_sh) {
sh_data->overlay_edge_sh = GPU_shader_create_from_arrays({
.vert = (const char *[]){world_clip_lib_or_empty, datatoc_edit_curve_overlay_handle_vert_glsl, NULL},
.geom = (const char *[]){world_clip_lib_or_empty, datatoc_common_globals_lib_glsl, datatoc_edit_curve_overlay_handle_geom_glsl, NULL},
.frag = (const char *[]){datatoc_gpu_shader_3D_smooth_color_frag_glsl, NULL},
.defs = (const char *[]){world_clip_def_or_empty, NULL},
});
}
if (!sh_data->overlay_vert_sh) {
sh_data->overlay_vert_sh = GPU_shader_create_from_arrays({
.vert = (const char *[]){world_clip_lib_or_empty, datatoc_common_globals_lib_glsl, datatoc_edit_curve_overlay_loosevert_vert_glsl, NULL},
.frag = (const char *[]){datatoc_gpu_shader_point_varying_color_frag_glsl, NULL},
.defs = (const char *[]){world_clip_def_or_empty, NULL},
});
}
}
@@ -134,6 +157,8 @@ static void EDIT_CURVE_cache_init(void *vedata)
EDIT_CURVE_StorageList *stl = ((EDIT_CURVE_Data *)vedata)->stl;
const DRWContextState *draw_ctx = DRW_context_state_get();
View3D *v3d = draw_ctx->v3d;
const RegionView3D *rv3d = draw_ctx->rv3d;
EDIT_CURVE_Shaders *sh_data = &e_data.sh_data[draw_ctx->shader_cfg];
if (!stl->g_data) {
/* Alloc transient pointers */
@@ -150,24 +175,33 @@ static void EDIT_CURVE_cache_init(void *vedata)
"Curve Wire",
DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_WIRE);
grp = DRW_shgroup_create(e_data.wire_sh, psl->wire_pass);
grp = DRW_shgroup_create(sh_data->wire_sh, psl->wire_pass);
DRW_shgroup_uniform_vec4(grp, "color", G_draw.block.colorWireEdit, 1);
if (rv3d->rflag & RV3D_CLIPPING) {
DRW_shgroup_world_clip_planes_from_rv3d(grp, rv3d);
}
stl->g_data->wire_shgrp = grp;
grp = DRW_shgroup_create(e_data.wire_normals_sh, psl->wire_pass);
grp = DRW_shgroup_create(sh_data->wire_normals_sh, psl->wire_pass);
DRW_shgroup_uniform_vec4(grp, "color", G_draw.block.colorWireEdit, 1);
DRW_shgroup_uniform_float_copy(grp, "normalSize", v3d->overlay.normals_length);
if (rv3d->rflag & RV3D_CLIPPING) {
DRW_shgroup_world_clip_planes_from_rv3d(grp, rv3d);
}
stl->g_data->wire_normals_shgrp = grp;
psl->overlay_edge_pass = DRW_pass_create(
"Curve Handle Overlay",
DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND);
grp = DRW_shgroup_create(e_data.overlay_edge_sh, psl->overlay_edge_pass);
grp = DRW_shgroup_create(sh_data->overlay_edge_sh, psl->overlay_edge_pass);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_vec2(grp, "viewportSize", DRW_viewport_size_get(), 1);
DRW_shgroup_uniform_bool(grp, "showCurveHandles", &stl->g_data->show_handles, 1);
if (rv3d->rflag & RV3D_CLIPPING) {
DRW_shgroup_world_clip_planes_from_rv3d(grp, rv3d);
}
stl->g_data->overlay_edge_shgrp = grp;
@@ -175,8 +209,11 @@ static void EDIT_CURVE_cache_init(void *vedata)
"Curve Vert Overlay",
DRW_STATE_WRITE_COLOR | DRW_STATE_POINT);
grp = DRW_shgroup_create(e_data.overlay_vert_sh, psl->overlay_vert_pass);
grp = DRW_shgroup_create(sh_data->overlay_vert_sh, psl->overlay_vert_pass);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
if (rv3d->rflag & RV3D_CLIPPING) {
DRW_shgroup_world_clip_planes_from_rv3d(grp, rv3d);
}
stl->g_data->overlay_vert_shgrp = grp;
}
}
@@ -244,6 +281,8 @@ static void EDIT_CURVE_draw_scene(void *vedata)
/* Thoses passes don't write to depth and are AA'ed using other tricks. */
DRW_draw_pass(psl->overlay_edge_pass);
DRW_draw_pass(psl->overlay_vert_pass);
DRW_state_clip_planes_reset();
}
/* Cleanup when destroying the engine.
@@ -251,9 +290,15 @@ static void EDIT_CURVE_draw_scene(void *vedata)
* Mostly used for freeing shaders */
static void EDIT_CURVE_engine_free(void)
{
DRW_SHADER_FREE_SAFE(e_data.wire_normals_sh);
DRW_SHADER_FREE_SAFE(e_data.overlay_edge_sh);
DRW_SHADER_FREE_SAFE(e_data.overlay_vert_sh);
for (int sh_data_index = 0; sh_data_index < ARRAY_SIZE(e_data.sh_data); sh_data_index++) {
EDIT_CURVE_Shaders *sh_data = &e_data.sh_data[sh_data_index];
/* Don't free builtins. */
sh_data->wire_sh = NULL;
GPUShader **sh_data_as_array = (GPUShader **)sh_data;
for (int i = 0; i < (sizeof(EDIT_CURVE_Shaders) / sizeof(GPUShader *)); i++) {
DRW_SHADER_FREE_SAFE(sh_data_as_array[i]);
}
}
}
static const DrawEngineDataSize EDIT_CURVE_data_size = DRW_VIEWPORT_DATA_SIZE(EDIT_CURVE_Data);

6
source/blender/draw/modes/shaders/edit_curve_overlay_handle_geom.glsl
View File

@@ -19,10 +19,16 @@ void output_line(vec2 offset, vec4 color)
gl_Position = gl_in[0].gl_Position;
gl_Position.xy += offset * gl_in[0].gl_Position.w;
#ifdef USE_WORLD_CLIP_PLANES
world_clip_planes_set_clip_distance(gl_in[0].gl_ClipDistance);
#endif
EmitVertex();
gl_Position = gl_in[1].gl_Position;
gl_Position.xy += offset * gl_in[1].gl_Position.w;
#ifdef USE_WORLD_CLIP_PLANES
world_clip_planes_set_clip_distance(gl_in[1].gl_ClipDistance);
#endif
EmitVertex();
}

10
source/blender/draw/modes/shaders/edit_curve_overlay_handle_vert.glsl
View File

@@ -1,7 +1,6 @@
/* Draw Curve Handles */
uniform mat4 ModelViewProjectionMatrix;
uniform mat4 ModelMatrix;
in vec3 pos;
in int data;
@@ -10,6 +9,11 @@ flat out int vertFlag;
void main()
{
gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0);
vec4 pos_4d = vec4(pos, 1.0);
gl_Position = ModelViewProjectionMatrix * pos_4d;
vertFlag = data;
#ifdef USE_WORLD_CLIP_PLANES
world_clip_planes_calc_clip_distance((ModelMatrix * pos_4d).xyz);
#endif
}

9
source/blender/draw/modes/shaders/edit_curve_overlay_loosevert_vert.glsl
View File

@@ -1,7 +1,6 @@
/* Draw Curve Vertices */
uniform mat4 ModelViewProjectionMatrix;
uniform mat4 ModelMatrix;
uniform vec2 viewportSize;
in vec3 pos;
@@ -23,6 +22,10 @@ void main()
finalColor = colorVertex;
}
gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0);
vec4 pos_4d = vec4(pos, 1.0);
gl_Position = ModelViewProjectionMatrix * pos_4d;
gl_PointSize = sizeVertex * 2.0;
#ifdef USE_WORLD_CLIP_PLANES
world_clip_planes_calc_clip_distance((ModelMatrix * pos_4d).xyz);
#endif
}

10
source/blender/draw/modes/shaders/edit_curve_overlay_normals_vert.glsl
View File

@@ -1,7 +1,6 @@
/* Draw Curve Normals */
uniform mat4 ModelViewProjectionMatrix;
uniform mat4 ModelMatrix;
uniform float normalSize;
in vec3 pos;
@@ -19,5 +18,10 @@ void main()
final_pos += normalSize * rad * (flip * nor - tan);
}
gl_Position = ModelViewProjectionMatrix * vec4(final_pos, 1.0);
vec4 final_pos_4d = vec4(final_pos, 1.0);
gl_Position = ModelViewProjectionMatrix * final_pos_4d;
#ifdef USE_WORLD_CLIP_PLANES
world_clip_planes_calc_clip_distance((ModelMatrix * final_pos_4d).xyz);
#endif
}