#include "utils.h"
#include "dali/public-api/animation/constraints.h"
+#include "generated/particle-view-vert.h"
+#include "generated/particle-view-frag.h"
+#include "generated/particle-view-simple-vert.h"
+#include "generated/particle-view-simple-frag.h"
+
//#define ENABLE_DEBUG_VOLUME
#define USE_GLSL_VERSION(version) "#version " #version "\n"
const uint32_t POPULATION_GRANULARITY = 128;
-///@brief Shader for billboarded particles, where the vertices of the particles
-/// are supplied as vec3 position (particle position) + vec2 sub-position.
-const char* const PARTICLES_VSH = USE_GLSL_VERSION(300 es)
-DALI_COMPOSE_SHADER(
- precision lowp float;
- uniform mat4 uModelView; // DALi
- uniform mat4 uProjection; // DALi
- uniform vec3 uSize; // DALi
- uniform vec4 uColor; // DALi
-
- uniform vec3 uSecondaryColor;
- uniform vec2 uDepthRange; // x is zNear, y is 1.f / (zFar - zNear)
- uniform float uTwinkleFrequency;
- uniform float uTwinkleSizeScale;
- uniform float uTwinkleOpacityWeight;
- uniform float uTime;
- uniform float uFocalLength;
- uniform float uAperture;
- uniform float uPopulation;
-
- struct Scatter
- {
- float radiusSqr;
- float amount;
- vec3 ray;
- };
-
- const int SCATTER_VARS = 6; // Must match ParticleView::mScatterProps' size.
- uniform Scatter uScatter[SCATTER_VARS];
-
- const int POPULATION_GRANULARITY = 128;
- uniform float uOrderLookUp[POPULATION_GRANULARITY];
-
- in vec3 aPosition;
- in float aSeed;
- in vec4 aPath;
- in vec2 aSubPosition;
- in float aSize;
-
- flat out float vDepth;
- flat out float vFocalDistance;
- out vec2 vUvUnit;
- flat out float vOpacity;
- flat out vec3 vColor; // ignore alpha
-
- float bezier(vec3 control, float alpha)
- {
- return mix(mix(control.x, control.y, alpha), mix(control.y, control.z, alpha), alpha);
- }
-
- void main() {
- // Get random order from the look-up table, based on particle ID.
- int particleId = gl_VertexID / 6;
- float order = uOrderLookUp[particleId & (POPULATION_GRANULARITY - 1)];
-
- // Get twinkle scalar
- float twinkle = sin(uTime * floor(uTwinkleFrequency * aSeed) + fract(aSeed * 1.17137));
-
- // Add Motion
- float s = sin(uTime + aSeed) * .5f + .5f; // different phase for all
- // NOTE: you'd think that taking the bezier() calls apart would save 4 mix() calls, since
- // the mix()es (of xy / yz / zw / wx) are all calculated twice. It turns out that the MALI
- // compiler is already doing this; leaving it as is for readability.
- float bx0 = bezier(aPath.xyz, s);
- float bx1 = bezier(aPath.zwx, s);
- float by0 = bezier(aPath.yzw, s);
- float by1 = bezier(aPath.wxy, s);
- vec3 motion = vec3(mix(bx0, bx1, s), mix(by0, by1, s), 0.f);
-
- // Model to view position
- vec3 position3 = aPosition * uSize + motion;
-
- vec4 position = uModelView * vec4(position3, 1.f);
-
- // Add scatter - calculated in view space, using view ray
- vec3 normalizedPos = position.xyz / uSize;
- for (int i = 0; i < SCATTER_VARS; ++i)
- {
- vec2 scatterDist = (normalizedPos - uScatter[i].ray * dot(uScatter[i].ray, normalizedPos)).xy;
-
- // NOTE: replacing the division with a multiplication (by inverse) oddly results in more instructions (MALI).
- float scatter = max(0.f, uScatter[i].radiusSqr - dot(scatterDist, scatterDist)) *
- uScatter[i].amount / aSize;
- position.xy += scatter * normalize(scatterDist) * uSize.xy;
- }
-
- // Calculate normalised depth and distance from focal plane
- float depth = (position.z - uDepthRange.x) * uDepthRange.y;
- vDepth = depth;
-
- float focalDist = (uFocalLength - depth) * uAperture;
- focalDist *= focalDist;
- vFocalDistance = max(focalDist, 1e-6f); // NOTE: was clamp(..., 1.f); side effect: out of focus particles get squashed at higher aperture values.
-
- // Calculate expiring scale - for size and opacity.
- float expiringScale = smoothstep(order + 1.f, order, uPopulation);
-
- // Calculate billboard position and size
- vec2 subPosition = aSubPosition * aSize *
- (1.f + twinkle * aSeed * uTwinkleSizeScale) *
- expiringScale;
-
- // Insist on hacking the size? Do it here...
- float sizeHack = depth + .5f;
- // NOTE: sizeHack *= sizeHack looked slightly better.
- subPosition *= sizeHack;
-
- vec3 subPositionView = vec3(subPosition, 0.);
-
- // Add billboards to view position.
- position += vec4(subPositionView, 0.f);
-
- // subPosition doubles as normalized (-1..1) UV.
- vUvUnit = aSubPosition;
-
- // Vary opacity (actor alpha) by time as well as expiring scale.
- vOpacity = uColor.a * expiringScale *
- (1.0f + aSeed + twinkle * uTwinkleOpacityWeight) / (2.0f + uTwinkleOpacityWeight);
-
- // Randomize RGB using seed.
- vec3 mixColor = vec3(fract(aSeed), fract(aSeed * 16.f), fract(aSeed * 256.f));
- vColor = mix(uColor.rgb, uSecondaryColor, mixColor);
-
- gl_Position = uProjection * position;
- });
-
-///@brief Fragment shader for particles, which simulates depth of field
-/// using a combination of procedural texturing, alpha testing and alpha
-/// blending.
-const char* const PARTICLES_FSH = USE_GLSL_VERSION(300 es)
-DALI_COMPOSE_SHADER(
- precision lowp float;
- uniform float uAlphaTestRefValue;
- uniform vec2 uFadeRange; // near, far
- in vec2 vUvUnit;
- flat in float vDepth;
- flat in float vFocalDistance;
- flat in float vOpacity;
- flat in vec3 vColor;
- out vec4 oFragColor;
-
- const float REF_VALUE_THRESHOLD = 1. / 64.;
-
- void main() {
- // Softened disc pattern from normalized UVs
- float value = 1.f - dot(vUvUnit, vUvUnit);
-
- // Decrease area of particles 'in-focus'.
- float refValue = (1.f - vFocalDistance) * .5f;
- float threshold = REF_VALUE_THRESHOLD * (1.f + vDepth);
- float alpha = pow(value, vFocalDistance) * smoothstep(refValue - threshold, refValue + threshold, value);
- if (alpha < uAlphaTestRefValue)
- {
- discard;
- }
-
- // Apply opacity
- alpha *= vOpacity;
- alpha *= alpha;
-
- // Fade particles out as they get close to the near and far clipping planes
- alpha *= smoothstep(.0f, uFadeRange.x, vDepth) * smoothstep(1.f, uFadeRange.y, vDepth);
-
- oFragColor = vec4(vColor, alpha);
- });
-
-///@brief Shader for simple textured geometry.
-const char* const SIMPLE_VSH = USE_GLSL_VERSION(300 es)
-DALI_COMPOSE_SHADER(
- precision mediump float;
- uniform mat4 uMvpMatrix;//by DALi
- uniform vec3 uSize; // by DALi
- in vec3 aPosition;
- void main() {
- gl_Position = uMvpMatrix * vec4(aPosition * uSize, 1.f);
- });
-
-///@brief Shader for an unlit, unfogged, textured mesh.
-const char* const SIMPLE_FSH = USE_GLSL_VERSION(300 es)
-DALI_COMPOSE_SHADER(
- precision mediump float;
- uniform vec4 uColor;
- out vec4 oFragColor;
-
- void main() {
- oFragColor = uColor;
- });
-
-
uint32_t GetSkipValue(uint32_t count, uint32_t prime)
{
uint32_t skip = 0;
}
// create shader
- Shader particleShader = Shader::New(PARTICLES_VSH, PARTICLES_FSH, Shader::Hint::MODIFIES_GEOMETRY);
+ Shader particleShader = Shader::New(SHADER_PARTICLE_VIEW_VERT, SHADER_PARTICLE_VIEW_FRAG, Shader::Hint::MODIFIES_GEOMETRY);
float zNear = camera.GetNearClippingPlane();
float zFar = camera.GetFarClippingPlane();
#ifdef ENABLE_DEBUG_VOLUME
Geometry cubeGeom = CreateCuboidWireframeGeometry();
- renderer = CreateRenderer(renderer.GetTextures(), cubeGeom, Shader::New(SIMPLE_VSH, SIMPLE_FSH));
+ renderer = CreateRenderer(renderer.GetTextures(), cubeGeom, Shader::New(SHADER_PARTICLE_VIEW_SIMPLE_VERT, SHADER_PARTICLE_VIEW_SIMPLE_FRAG));
masterParticles.AddRenderer(renderer);
#endif
projects / platform / core / uifw / dali-demo.git / blobdiff