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REVIEWED: DrawMeshInstanced()

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This commit is contained in:
Ray 2021-03-26 00:12:29 +01:00
parent c6828070dc
commit f9bab14fdb
4 changed files with 132 additions and 45 deletions
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27
examples/shaders/shaders_rlgl_mesh_instanced.c
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@ -59,15 +59,15 @@ int main(void)
camera.fovy = 45.0f;
camera.projection = CAMERA_PERSPECTIVE;
const int count = 10000; // Number of instances to display
const int instances = 10000; // Number of instances to display
Mesh cube = GenMeshCube(1.0f, 1.0f, 1.0f);
Matrix *rotations = RL_MALLOC(count*sizeof(Matrix)); // Rotation state of instances
Matrix *rotationsInc = RL_MALLOC(count*sizeof(Matrix)); // Per-frame rotation animation of instances
Matrix *translations = RL_MALLOC(count*sizeof(Matrix)); // Locations of instances
Matrix *rotations = RL_MALLOC(instances*sizeof(Matrix)); // Rotation state of instances
Matrix *rotationsInc = RL_MALLOC(instances*sizeof(Matrix)); // Per-frame rotation animation of instances
Matrix *translations = RL_MALLOC(instances*sizeof(Matrix)); // Locations of instances
// Scatter random cubes around
for (int i = 0; i < count; i++)
for (int i = 0; i < instances; i++)
{
x = GetRandomValue(-50, 50);
y = GetRandomValue(-50, 50);
@ -84,7 +84,7 @@ int main(void)
rotations[i] = MatrixIdentity();
}
Matrix *transforms = RL_MALLOC(count*sizeof(Matrix)); // Pre-multiplied transformations passed to rlgl
Matrix *transforms = RL_MALLOC(instances*sizeof(Matrix)); // Pre-multiplied transformations passed to rlgl
Shader shader = LoadShader(TextFormat("resources/shaders/glsl%i/base_lighting_instanced.vs", GLSL_VERSION),
TextFormat("resources/shaders/glsl%i/lighting.fs", GLSL_VERSION));
@ -107,19 +107,18 @@ int main(void)
SetCameraMode(camera, CAMERA_ORBITAL); // Set an orbital camera mode
int textPositionY = 300;
int framesCounter = 0; // Simple frames counter to manage animation
int framesCounter = 0; // Simple frames counter to manage animation
SetTargetFPS(fps); // Set our game to run at 60 frames-per-second
SetTargetFPS(fps); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera);
textPositionY = 300;
framesCounter++;
if (IsKeyDown(KEY_UP)) amp += 0.5f;
@ -148,7 +147,7 @@ int main(void)
SetShaderValue(shader, shader.locs[SHADER_LOC_VECTOR_VIEW], cameraPos, SHADER_UNIFORM_VEC3);
// Apply per-instance transformations
for (int i = 0; i < count; i++)
for (int i = 0; i < instances; i++)
{
rotations[i] = MatrixMultiply(rotations[i], rotationsInc[i]);
transforms[i] = MatrixMultiply(rotations[i], translations[i]);
@ -164,6 +163,8 @@ int main(void)
transforms[i] = MatrixMultiply(transforms[i], MatrixTranslate(0.0f, y, 0.0f));
}
UpdateCamera(&camera);
//----------------------------------------------------------------------------------
// Draw
@ -173,7 +174,7 @@ int main(void)
ClearBackground(RAYWHITE);
BeginMode3D(camera);
DrawMeshInstanced(cube, material, transforms, count);
DrawMeshInstanced(cube, material, transforms, instances);
EndMode3D();
DrawText("A CUBE OF DANCING CUBES!", 490, 10, 20, MAROON);