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[rlgl][rmodels] Add instranceTransform shader location index #4538 (#4579)

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This commit is contained in:
Michael
2024-12-08 12:48:54 +01:00
committed by GitHub
parent 93a67417b3
commit d2cd2a0152
7 changed files with 18 additions and 8 deletions
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2
examples/shaders/resources/shaders/glsl330/lighting_instancing.vs
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@@ -25,7 +25,7 @@ void main()
// Send vertex attributes to fragment shader
fragPosition = vec3(instanceTransform*vec4(vertexPosition, 1.0));
fragTexCoord = vertexTexCoord;
//fragColor = vertexColor;
fragColor = vec4(1.0);
fragNormal = normalize(vec3(matNormal*vec4(vertexNormal, 1.0)));
// Calculate final vertex position, note that we multiply mvp by instanceTransform

3
examples/shaders/shaders_mesh_instancing.c
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@@ -61,7 +61,7 @@ int main(void)
{
Matrix translation = MatrixTranslate((float)GetRandomValue(-50, 50), (float)GetRandomValue(-50, 50), (float)GetRandomValue(-50, 50));
Vector3 axis = Vector3Normalize((Vector3){ (float)GetRandomValue(0, 360), (float)GetRandomValue(0, 360), (float)GetRandomValue(0, 360) });
float angle = (float)GetRandomValue(0, 10)*DEG2RAD;
float angle = (float)GetRandomValue(0, 180)*DEG2RAD;
Matrix rotation = MatrixRotate(axis, angle);
transforms[i] = MatrixMultiply(rotation, translation);
@@ -73,7 +73,6 @@ int main(void)
// Get shader locations
shader.locs[SHADER_LOC_MATRIX_MVP] = GetShaderLocation(shader, "mvp");
shader.locs[SHADER_LOC_VECTOR_VIEW] = GetShaderLocation(shader, "viewPos");
shader.locs[SHADER_LOC_MATRIX_MODEL] = GetShaderLocationAttrib(shader, "instanceTransform");
// Set shader value: ambient light level
int ambientLoc = GetShaderLocation(shader, "ambient");

2
src/config.h
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@@ -151,6 +151,8 @@
#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS 7
#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 8
#endif
#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INSTANCE_TX 9
// Default shader vertex attribute names to set location points
// NOTE: When a new shader is loaded, the following locations are tried to be set for convenience

3
src/raylib.h
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@@ -801,7 +801,8 @@ typedef enum {
SHADER_LOC_MAP_BRDF, // Shader location: sampler2d texture: brdf
SHADER_LOC_VERTEX_BONEIDS, // Shader location: vertex attribute: boneIds
SHADER_LOC_VERTEX_BONEWEIGHTS, // Shader location: vertex attribute: boneWeights
SHADER_LOC_BONE_MATRICES // Shader location: array of matrices uniform: boneMatrices
SHADER_LOC_BONE_MATRICES, // Shader location: array of matrices uniform: boneMatrices
SHADER_LOC_VERTEX_INSTANCE_TX // Shader location: vertex attribute: instanceTransform
} ShaderLocationIndex;
#define SHADER_LOC_MAP_DIFFUSE SHADER_LOC_MAP_ALBEDO

1
src/rcore.c
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@@ -1346,6 +1346,7 @@ Shader LoadShaderFromMemory(const char *vsCode, const char *fsCode)
shader.locs[SHADER_LOC_VERTEX_COLOR] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR);
shader.locs[SHADER_LOC_VERTEX_BONEIDS] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS);
shader.locs[SHADER_LOC_VERTEX_BONEWEIGHTS] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS);
shader.locs[SHADER_LOC_VERTEX_INSTANCE_TX] = rlGetLocationAttrib(shader.id, RL_DEFAULT_SHADER_ATTRIB_NAME_INSTANCE_TX);
// Get handles to GLSL uniform locations (vertex shader)
shader.locs[SHADER_LOC_MATRIX_MVP] = rlGetLocationUniform(shader.id, RL_DEFAULT_SHADER_UNIFORM_NAME_MVP);

7
src/rlgl.h
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@@ -355,6 +355,9 @@
#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEWEIGHTS 8
#endif
#endif
#ifndef RL_DEFAULT_SHADER_ATTRIB_LOCATION_INSTANCE_TX
#define RL_DEFAULT_SHADER_ATTRIB_LOCATION_INSTANCE_TX 9
#endif
//----------------------------------------------------------------------------------
// Types and Structures Definition
@@ -998,6 +1001,9 @@ RLAPI void rlLoadDrawQuad(void); // Load and draw a quad
#ifndef RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS
#define RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS "vertexBoneWeights" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_NAME_BONEWEIGHTS
#endif
#ifndef RL_DEFAULT_SHADER_ATTRIB_NAME_INSTANCE_TX
#define RL_DEFAULT_SHADER_ATTRIB_NAME_INSTANCE_TX "instanceTransform" // Bound by default to shader location: RL_DEFAULT_SHADER_ATTRIB_NAME_INSTANCE_TX
#endif
#ifndef RL_DEFAULT_SHADER_UNIFORM_NAME_MVP
#define RL_DEFAULT_SHADER_UNIFORM_NAME_MVP "mvp" // model-view-projection matrix
@@ -4216,6 +4222,7 @@ unsigned int rlLoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId)
glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_COLOR, RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR);
glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_TANGENT, RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT);
glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_TEXCOORD2, RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2);
glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_INSTANCE_TX, RL_DEFAULT_SHADER_ATTRIB_NAME_INSTANCE_TX);
#ifdef RL_SUPPORT_MESH_GPU_SKINNING
glBindAttribLocation(program, RL_DEFAULT_SHADER_ATTRIB_LOCATION_BONEIDS, RL_DEFAULT_SHADER_ATTRIB_NAME_BONEIDS);

8
src/rmodels.c
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@@ -1734,12 +1734,12 @@ void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, i
// no faster, since we're transferring all the transform matrices anyway
instancesVboId = rlLoadVertexBuffer(instanceTransforms, instances*sizeof(float16), false);
// Instances transformation matrices are send to shader attribute location: SHADER_LOC_MATRIX_MODEL
// Instances transformation matrices are sent to shader attribute location: SHADER_LOC_VERTEX_INSTANCE_TX
for (unsigned int i = 0; i < 4; i++)
{
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i, 4, RL_FLOAT, 0, sizeof(Matrix), i*sizeof(Vector4));
rlSetVertexAttributeDivisor(material.shader.locs[SHADER_LOC_MATRIX_MODEL] + i, 1);
rlEnableVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_INSTANCE_TX] + i);
rlSetVertexAttribute(material.shader.locs[SHADER_LOC_VERTEX_INSTANCE_TX] + i, 4, RL_FLOAT, 0, sizeof(Matrix), i*sizeof(Vector4));
rlSetVertexAttributeDivisor(material.shader.locs[SHADER_LOC_VERTEX_INSTANCE_TX] + i, 1);
}
rlDisableVertexBuffer();