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https://github.com/bjornbytes/lovr.git
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114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
#include "graphics/material.h"
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#include "resources/shaders.h"
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#include <math.h>
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#include <stdlib.h>
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Material* lovrMaterialCreate() {
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Material* material = lovrAlloc(Material, lovrMaterialDestroy);
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if (!material) return NULL;
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for (int i = 0; i < MAX_MATERIAL_SCALARS; i++) {
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material->scalars[i] = 1.f;
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}
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for (int i = 0; i < MAX_MATERIAL_COLORS; i++) {
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if (i == COLOR_EMISSIVE) {
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material->colors[i] = (Color) { 0, 0, 0, 0 };
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} else {
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material->colors[i] = (Color) { 1, 1, 1, 1 };
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}
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}
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lovrMaterialSetTransform(material, 0, 0, 1, 1, 0);
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return material;
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}
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void lovrMaterialDestroy(void* ref) {
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Material* material = ref;
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for (int i = 0; i < MAX_MATERIAL_TEXTURES; i++) {
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lovrRelease(material->textures[i]);
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}
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free(material);
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}
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void lovrMaterialBind(Material* material, Shader* shader) {
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for (int i = 0; i < MAX_MATERIAL_SCALARS; i++) {
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lovrShaderSetFloats(shader, lovrShaderScalarUniforms[i], &material->scalars[i], 0, 1);
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}
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for (int i = 0; i < MAX_MATERIAL_COLORS; i++) {
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lovrShaderSetColor(shader, lovrShaderColorUniforms[i], material->colors[i]);
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}
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for (int i = 0; i < MAX_MATERIAL_TEXTURES; i++) {
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lovrShaderSetTextures(shader, lovrShaderTextureUniforms[i], &material->textures[i], 0, 1);
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}
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lovrShaderSetMatrices(shader, "lovrMaterialTransform", material->transform, 0, 9);
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material->dirty = false;
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}
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bool lovrMaterialIsDirty(Material* material) {
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return material->dirty;
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}
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float lovrMaterialGetScalar(Material* material, MaterialScalar scalarType) {
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return material->scalars[scalarType];
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}
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void lovrMaterialSetScalar(Material* material, MaterialScalar scalarType, float value) {
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if (material->scalars[scalarType] != value) {
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material->scalars[scalarType] = value;
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material->dirty = true;
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}
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}
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Color lovrMaterialGetColor(Material* material, MaterialColor colorType) {
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return material->colors[colorType];
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}
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void lovrMaterialSetColor(Material* material, MaterialColor colorType, Color color) {
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if (memcmp(&material->colors[colorType], &color, 4 * sizeof(float))) {
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material->colors[colorType] = color;
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material->dirty = true;
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}
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}
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Texture* lovrMaterialGetTexture(Material* material, MaterialTexture textureType) {
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return material->textures[textureType];
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}
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void lovrMaterialSetTexture(Material* material, MaterialTexture textureType, Texture* texture) {
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if (material->textures[textureType] != texture) {
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lovrRetain(texture);
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lovrRelease(material->textures[textureType]);
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material->textures[textureType] = texture;
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material->dirty = true;
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}
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}
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void lovrMaterialGetTransform(Material* material, float* ox, float* oy, float* sx, float* sy, float* angle) {
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*ox = material->transform[6];
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*oy = material->transform[7];
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*sx = sqrt(material->transform[0] * material->transform[0] + material->transform[1] * material->transform[1]);
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*sy = sqrt(material->transform[3] * material->transform[3] + material->transform[4] * material->transform[4]);
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*angle = atan2(-material->transform[3], material->transform[0]);
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}
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void lovrMaterialSetTransform(Material* material, float ox, float oy, float sx, float sy, float angle) {
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float c = cos(angle);
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float s = sin(angle);
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material->transform[0] = c * sx;
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material->transform[1] = s * sx;
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material->transform[2] = 0;
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material->transform[3] = -s * sy;
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material->transform[4] = c * sy;
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material->transform[5] = 0;
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material->transform[6] = ox;
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material->transform[7] = oy;
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material->transform[8] = 1;
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material->dirty = true;
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}
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