2017-12-10 20:40:37 +00:00
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#include "api.h"
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2017-08-11 05:23:19 +00:00
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#include "graphics/graphics.h"
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2017-03-11 11:08:07 +00:00
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#include "graphics/shader.h"
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2017-02-18 23:18:30 +00:00
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#include "math/transform.h"
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2016-08-10 06:28:17 +00:00
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2017-10-21 20:39:50 +00:00
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struct TempData {
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void* data;
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size_t size;
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};
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static struct TempData tempData;
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2017-10-22 22:58:56 +00:00
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int l_lovrShaderHasUniform(lua_State* L) {
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Shader* shader = luax_checktype(L, 1, Shader);
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const char* name = luaL_checkstring(L, 2);
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lua_pushboolean(L, lovrShaderGetUniform(shader, name) != NULL);
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return 1;
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}
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2016-08-28 20:36:54 +00:00
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int l_lovrShaderSend(lua_State* L) {
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2016-11-19 08:57:18 +00:00
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Shader* shader = luax_checktype(L, 1, Shader);
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2016-08-28 20:36:54 +00:00
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const char* name = luaL_checkstring(L, 2);
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2016-12-30 19:57:15 +00:00
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lua_settop(L, 3);
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2016-08-28 20:36:54 +00:00
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2017-10-21 20:39:50 +00:00
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Uniform* uniform = lovrShaderGetUniform(shader, name);
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if (!uniform) {
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2016-08-28 20:36:54 +00:00
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return luaL_error(L, "Unknown shader variable '%s'", name);
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}
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2017-10-22 22:58:56 +00:00
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if (tempData.size < uniform->size) {
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2017-10-21 20:39:50 +00:00
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tempData.size = uniform->size;
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tempData.data = realloc(tempData.data, tempData.size);
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}
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2016-11-27 02:58:58 +00:00
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2017-10-21 20:39:50 +00:00
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int* ints = (int*) tempData.data;
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float* floats = (float*) tempData.data;
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Texture** textures = (Texture**) tempData.data;
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int n = 1;
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int components = uniform->components;
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2018-03-12 18:25:28 +00:00
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if (components > 1 && lua_istable(L, 3)) {
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2017-10-21 20:39:50 +00:00
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lua_rawgeti(L, 3, 1);
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if (!lua_istable(L, -1)) {
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lua_newtable(L);
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lua_pushvalue(L, 3);
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lua_rawseti(L, -2, 1);
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} else {
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lua_pop(L, 1);
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}
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n = lua_objlen(L, -1);
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if (n != uniform->count) {
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const char* elements = uniform->count == 1 ? "element" : "elements";
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return luaL_error(L, "Expected %d %s for array '%s', got %d", uniform->count, elements, uniform->name, n);
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}
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}
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2016-08-28 20:36:54 +00:00
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2018-03-12 18:25:28 +00:00
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Blob** blob = luax_totype(L, 3, Blob);
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2017-10-21 20:39:50 +00:00
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switch (uniform->type) {
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case UNIFORM_FLOAT:
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2018-03-12 18:25:28 +00:00
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if (blob) {
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floats = (float*) (*blob)->data;
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} else if (components == 1) {
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2018-01-10 04:54:55 +00:00
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floats[0] = luaL_checknumber(L, 3);
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2016-12-30 19:57:15 +00:00
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} else {
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2017-10-21 20:39:50 +00:00
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luaL_checktype(L, 3, LUA_TTABLE);
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for (int i = 0; i < n; i++) {
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lua_rawgeti(L, -1, i + 1);
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if (lua_type(L, -1) != LUA_TTABLE || (int) lua_objlen(L, -1) != components) {
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return luaL_error(L, "Expected %d components for uniform '%s' #%d, got %d", components, uniform->name, lua_objlen(L, -1));
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}
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for (int j = 0; j < components; j++) {
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lua_rawgeti(L, -1, j + 1);
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floats[i * components + j] = luaL_checknumber(L, -1);
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lua_pop(L, 1);
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}
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2016-12-30 19:57:15 +00:00
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lua_pop(L, 1);
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}
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2016-08-28 20:36:54 +00:00
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}
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2017-12-08 21:04:43 +00:00
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lovrShaderSetFloat(shader, name, floats, n * components);
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2016-08-28 20:36:54 +00:00
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break;
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2017-10-21 20:39:50 +00:00
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case UNIFORM_INT:
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2018-03-12 18:25:28 +00:00
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if (blob) {
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ints = (int*) (*blob)->data;
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} else if (components == 1) {
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2017-10-21 20:39:50 +00:00
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ints[0] = luaL_checkinteger(L, 3);
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2016-12-30 19:57:15 +00:00
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} else {
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2017-10-21 20:39:50 +00:00
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luaL_checktype(L, 3, LUA_TTABLE);
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for (int i = 0; i < n; i++) {
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lua_rawgeti(L, -1, i + 1);
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if (lua_type(L, -1) != LUA_TTABLE || (int) lua_objlen(L, -1) != components) {
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return luaL_error(L, "Expected %d components for uniform '%s' #%d, got %d", components, uniform->name, lua_objlen(L, -1));
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}
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for (int j = 0; j < components; j++) {
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lua_rawgeti(L, -1, j + 1);
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ints[i * components + j] = luaL_checkinteger(L, -1);
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lua_pop(L, 1);
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}
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2016-12-30 19:57:15 +00:00
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lua_pop(L, 1);
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}
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2016-08-28 20:36:54 +00:00
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}
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2017-12-08 21:04:43 +00:00
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lovrShaderSetInt(shader, name, ints, n * components);
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2016-08-28 20:36:54 +00:00
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break;
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2017-10-21 20:39:50 +00:00
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case UNIFORM_MATRIX:
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2018-03-12 18:25:28 +00:00
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if (blob) {
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floats = (float*) (*blob)->data;
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} else if (components == 4 && lua_isuserdata(L, 3)) {
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2017-10-21 20:39:50 +00:00
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Transform* transform = luax_checktype(L, 3, Transform);
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memcpy(floats, transform->matrix, 16 * sizeof(float));
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2016-12-30 19:57:15 +00:00
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} else {
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2017-10-21 20:39:50 +00:00
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luaL_checktype(L, 3, LUA_TTABLE);
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for (int i = 0; i < n; i++) {
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lua_rawgeti(L, -1, i + 1);
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for (int j = 0; j < components * components; j++) {
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lua_rawgeti(L, -1, j + 1);
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floats[i * components * components + j] = luaL_checknumber(L, -1);
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lua_pop(L, 1);
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}
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2016-12-30 19:57:15 +00:00
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lua_pop(L, 1);
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}
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}
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2017-12-08 21:04:43 +00:00
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lovrShaderSetMatrix(shader, name, floats, n * components * components);
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2016-08-28 20:36:54 +00:00
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break;
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2017-10-21 20:39:50 +00:00
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case UNIFORM_SAMPLER:
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if (components == 1) {
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2017-12-08 01:52:04 +00:00
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textures[0] = luax_checktypeof(L, 3, Texture);
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2017-02-18 23:18:30 +00:00
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} else {
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luaL_checktype(L, 3, LUA_TTABLE);
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2017-10-21 20:39:50 +00:00
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for (int i = 0; i < n; i++) {
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lua_rawgeti(L, -1, i + 1);
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2017-12-08 01:52:04 +00:00
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textures[i] = luax_checktypeof(L, -1, Texture);
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2017-02-18 23:18:30 +00:00
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lua_pop(L, 1);
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}
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2016-08-28 20:36:54 +00:00
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}
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2017-10-21 20:39:50 +00:00
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lovrShaderSetTexture(shader, name, textures, n);
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2016-08-28 20:36:54 +00:00
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break;
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2017-10-21 20:39:50 +00:00
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default: break;
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2016-08-28 20:36:54 +00:00
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}
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return 0;
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}
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2017-03-11 11:08:07 +00:00
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const luaL_Reg lovrShader[] = {
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2017-10-22 22:58:56 +00:00
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{ "hasUniform", l_lovrShaderHasUniform },
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2017-03-11 11:08:07 +00:00
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{ "send", l_lovrShaderSend },
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{ NULL, NULL }
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};
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