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Add player character shadow casting in shadow pass

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Kelsi 2026-02-04 16:36:03 -08:00
parent 3d63c32b7f
commit 54eac50c4d
3 changed files with 103 additions and 2 deletions
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80
src/rendering/character_renderer.cpp
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@ -1151,6 +1151,86 @@ void CharacterRenderer::render(const Camera& camera, const glm::mat4& view, cons
glEnable(GL_CULL_FACE); // Restore culling for other renderers
}
void CharacterRenderer::renderShadow(GLuint shadowShaderProgram) {
if (instances.empty() || shadowShaderProgram == 0) {
return;
}
GLint modelLoc = glGetUniformLocation(shadowShaderProgram, "uModel");
GLint useTexLoc = glGetUniformLocation(shadowShaderProgram, "uUseTexture");
GLint texLoc = glGetUniformLocation(shadowShaderProgram, "uTexture");
GLint alphaTestLoc = glGetUniformLocation(shadowShaderProgram, "uAlphaTest");
GLint opacityLoc = glGetUniformLocation(shadowShaderProgram, "uShadowOpacity");
GLint useBonesLoc = glGetUniformLocation(shadowShaderProgram, "uUseBones");
if (modelLoc < 0) {
return;
}
if (useTexLoc >= 0) glUniform1i(useTexLoc, 0);
if (alphaTestLoc >= 0) glUniform1i(alphaTestLoc, 0);
if (opacityLoc >= 0) glUniform1f(opacityLoc, 1.0f);
if (useBonesLoc >= 0) glUniform1i(useBonesLoc, 0);
if (texLoc >= 0) glUniform1i(texLoc, 0);
glActiveTexture(GL_TEXTURE0);
for (const auto& [_, instance] : instances) {
auto modelIt = models.find(instance.modelId);
if (modelIt == models.end()) continue;
const auto& gpuModel = modelIt->second;
glm::mat4 modelMat = instance.hasOverrideModelMatrix
? instance.overrideModelMatrix
: getModelMatrix(instance);
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, &modelMat[0][0]);
bool useBones = !instance.boneMatrices.empty();
if (useBonesLoc >= 0) glUniform1i(useBonesLoc, useBones ? 1 : 0);
if (useBones) {
int numBones = std::min(static_cast<int>(instance.boneMatrices.size()), MAX_BONES);
GLint bonesLoc = glGetUniformLocation(shadowShaderProgram, "uBones[0]");
if (bonesLoc >= 0) {
glUniformMatrix4fv(bonesLoc, numBones, GL_FALSE, &instance.boneMatrices[0][0][0]);
}
}
glBindVertexArray(gpuModel.vao);
if (!gpuModel.data.batches.empty()) {
for (const auto& batch : gpuModel.data.batches) {
GLuint texId = whiteTexture;
if (batch.textureIndex < gpuModel.data.textureLookup.size()) {
uint16_t lookupIdx = gpuModel.data.textureLookup[batch.textureIndex];
if (lookupIdx < gpuModel.textureIds.size()) {
texId = gpuModel.textureIds[lookupIdx];
}
}
bool useTexture = (texId != 0 && texId != whiteTexture);
if (useTexLoc >= 0) glUniform1i(useTexLoc, useTexture ? 1 : 0);
if (alphaTestLoc >= 0) glUniform1i(alphaTestLoc, useTexture ? 1 : 0);
if (opacityLoc >= 0) glUniform1f(opacityLoc, 1.0f);
if (useTexture) {
glBindTexture(GL_TEXTURE_2D, texId);
}
glDrawElements(GL_TRIANGLES,
batch.indexCount,
GL_UNSIGNED_SHORT,
(void*)(batch.indexStart * sizeof(uint16_t)));
}
} else {
if (useTexLoc >= 0) glUniform1i(useTexLoc, 0);
if (alphaTestLoc >= 0) glUniform1i(alphaTestLoc, 0);
glDrawElements(GL_TRIANGLES,
static_cast<GLsizei>(gpuModel.data.indices.size()),
GL_UNSIGNED_SHORT,
0);
}
}
glBindVertexArray(0);
}
glm::mat4 CharacterRenderer::getModelMatrix(const CharacterInstance& instance) const {
glm::mat4 model = glm::mat4(1.0f);