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- #include "render.h"
- #include "texture.h"
- #include "bsp.h"
- #include "cache.h"
- #include "common.h"
- #include "profiler.h"
- #include "atto/app.h"
- #include "atto/platform.h"
- #ifdef ATTO_PLATFORM_X11
- #define GL_GLEXT_PROTOTYPES 1
- #include <GL/glx.h>
- #include <GL/gl.h>
- #include <GL/glext.h>
- #define ATTO_GL_DESKTOP
- #endif /* ifdef ATTO_PLATFORM_X11 */
- #ifdef ATTO_PLATFORM_RPI
- #include <GLES2/gl2.h>
- #include <GLES2/gl2ext.h>
- #define ATTO_GL_ES
- #endif /* ifdef ATTO_PLATFORM_RPI */
- #ifdef ATTO_PLATFORM_WINDOWS
- #include "libc.h"
- #include <GL/gl.h>
- #include <glext.h>
- #define ATTO_GL_DESKTOP
- #endif /* ifdef ATTO_PLATFORM_WINDOWS */
- #ifdef ATTO_PLATFORM_OSX
- #include <OpenGL/gl3.h>
- #define ATTO_GL_DESKTOP
- #endif
- #define RENDER_ERRORCHECK
- //#define RENDER_GL_TRACE
- #define RENDER_GL_PROFILE_FUNC profileEvent
- #ifndef RENDER_ASSERT
- #define RENDER_ASSERT(cond) \
- if (!(cond)) { \
- aAppDebugPrintf("ERROR @ %s:%d: (%s) failed", __FILE__, __LINE__, #cond); \
- aAppTerminate(-1); \
- }
- #endif /* ifndef RENDER_ASSERT */
- #ifdef RENDER_GL_PROFILE_FUNC
- #define RENDER_GL_PROFILE_PREAMBLE const ATimeUs profile_time_start__ = aAppTime();
- #define RENDER_GL_PROFILE_START const ATimeUs agl_profile_start_ = aAppTime();
- #define RENDER_GL_PROFILE_END RENDER_GL_PROFILE_FUNC(__FUNCTION__, aAppTime() - agl_profile_start_);
- #define RENDER_GL_PROFILE_END_NAME(name) RENDER_GL_PROFILE_FUNC(name, aAppTime() - agl_profile_start_);
- #else
- #define RENDER_GL_PROFILE_PREAMBLE
- #define RENDER_GL_PROFILE_FUNC(...)
- #endif
- #if 0 //ndef RENDER_GL_DEBUG
- #define GL_CALL(f) (f)
- #else
- #if 0
- static void a__GlPrintError(const char *message, int error) {
- const char *errstr = "UNKNOWN";
- switch (error) {
- case GL_INVALID_ENUM: errstr = "GL_INVALID_ENUM"; break;
- case GL_INVALID_VALUE: errstr = "GL_INVALID_VALUE"; break;
- case GL_INVALID_OPERATION: errstr = "GL_INVALID_OPERATION"; break;
- #ifdef GL_STACK_OVERFLOW
- case GL_STACK_OVERFLOW: errstr = "GL_STACK_OVERFLOW"; break;
- #endif
- #ifdef GL_STACK_UNDERFLOW
- case GL_STACK_UNDERFLOW: errstr = "GL_STACK_UNDERFLOW"; break;
- #endif
- case GL_OUT_OF_MEMORY: errstr = "GL_OUT_OF_MEMORY"; break;
- #ifdef GL_TABLE_TOO_LARGE
- case GL_TABLE_TOO_LARGE: errstr = "GL_TABLE_TOO_LARGE"; break;
- #endif
- };
- PRINTF("%s %s (%#x)", message, errstr, error);
- }
- #define RENDER_GL_GETERROR(f) \
- const int glerror = glGetError(); \
- if (glerror != GL_NO_ERROR) { \
- a__GlPrintError(__FILE__ ":" RENDER__GL_STR(__LINE__) ": " #f " returned ", glerror); \
- RENDER_ASSERT(!"GL error"); \
- }
- #else
- #define RENDER_GL_GETERROR(f)
- #endif
- #define RENDER__GL_STR__(s) #s
- #define RENDER__GL_STR(s) RENDER__GL_STR__(s)
- #ifdef RENDER_GL_TRACE
- #define RENDER_GL_TRACE_PRINT PRINTF
- #else
- #define RENDER_GL_TRACE_PRINT(...)
- #endif
- #define GL_CALL(f) do{\
- RENDER_GL_TRACE_PRINT("%s", #f); \
- RENDER_GL_PROFILE_PREAMBLE \
- f; \
- RENDER_GL_PROFILE_FUNC(#f, aAppTime() - profile_time_start__); \
- RENDER_GL_GETERROR(f) \
- } while(0)
- #endif /* RENDER_GL_DEBUG */
- #ifdef _WIN32
- #define WGL__FUNCLIST \
- WGL__FUNCLIST_DO(PFNGLGENBUFFERSPROC, GenBuffers) \
- WGL__FUNCLIST_DO(PFNGLBINDBUFFERPROC, BindBuffer) \
- WGL__FUNCLIST_DO(PFNGLBUFFERDATAPROC, BufferData) \
- WGL__FUNCLIST_DO(PFNGLGETATTRIBLOCATIONPROC, GetAttribLocation) \
- WGL__FUNCLIST_DO(PFNGLACTIVETEXTUREPROC, ActiveTexture) \
- WGL__FUNCLIST_DO(PFNGLCREATESHADERPROC, CreateShader) \
- WGL__FUNCLIST_DO(PFNGLSHADERSOURCEPROC, ShaderSource) \
- WGL__FUNCLIST_DO(PFNGLCOMPILESHADERPROC, CompileShader) \
- WGL__FUNCLIST_DO(PFNGLATTACHSHADERPROC, AttachShader) \
- WGL__FUNCLIST_DO(PFNGLDELETESHADERPROC, DeleteShader) \
- WGL__FUNCLIST_DO(PFNGLGETSHADERIVPROC, GetShaderiv) \
- WGL__FUNCLIST_DO(PFNGLGETSHADERINFOLOGPROC, GetShaderInfoLog) \
- WGL__FUNCLIST_DO(PFNGLCREATEPROGRAMPROC, CreateProgram) \
- WGL__FUNCLIST_DO(PFNGLLINKPROGRAMPROC, LinkProgram) \
- WGL__FUNCLIST_DO(PFNGLGETPROGRAMINFOLOGPROC, GetProgramInfoLog) \
- WGL__FUNCLIST_DO(PFNGLDELETEPROGRAMPROC, DeleteProgram) \
- WGL__FUNCLIST_DO(PFNGLGETPROGRAMIVPROC, GetProgramiv) \
- WGL__FUNCLIST_DO(PFNGLUSEPROGRAMPROC, UseProgram) \
- WGL__FUNCLIST_DO(PFNGLGETUNIFORMLOCATIONPROC, GetUniformLocation) \
- WGL__FUNCLIST_DO(PFNGLUNIFORM1FPROC, Uniform1f) \
- WGL__FUNCLIST_DO(PFNGLUNIFORM2FPROC, Uniform2f) \
- WGL__FUNCLIST_DO(PFNGLUNIFORM1IPROC, Uniform1i) \
- WGL__FUNCLIST_DO(PFNGLUNIFORMMATRIX4FVPROC, UniformMatrix4fv) \
- WGL__FUNCLIST_DO(PFNGLENABLEVERTEXATTRIBARRAYPROC, EnableVertexAttribArray) \
- WGL__FUNCLIST_DO(PFNGLVERTEXATTRIBPOINTERPROC, VertexAttribPointer) \
- WGL__FUNCLIST_DO(PFNGLGENERATEMIPMAPPROC, GenerateMipmap) \
- #define WGL__FUNCLIST_DO(T,N) T gl##N = 0;
- WGL__FUNCLIST
- #undef WGL__FUNCLIST_DO
- #endif /* ifdef _WIN32 */
- static GLint render_ShaderCreate(GLenum type, const char *sources[]) {
- int n;
- GLuint shader = glCreateShader(type);
- for (n = 0; sources[n]; ++n);
- GL_CALL(glShaderSource(shader, n, (const GLchar **)sources, 0));
- GL_CALL(glCompileShader(shader));
- #ifdef RENDER_ERRORCHECK
- {
- GLint status;
- GL_CALL(glGetShaderiv(shader, GL_COMPILE_STATUS, &status));
- if (status != GL_TRUE) {
- char buffer[1024];
- GL_CALL(glGetShaderInfoLog(shader, sizeof(buffer), 0, buffer));
- PRINTF("Shader compilation error: %s", buffer);
- GL_CALL(glDeleteShader(shader));
- shader = 0;
- }
- }
- #endif
- return shader;
- }
- void renderTextureUpload(RTexture *texture, RTextureUploadParams params) {
- GLenum internal, format, type;
- if (texture->gl_name == -1) {
- GL_CALL(glGenTextures(1, (GLuint*)&texture->gl_name));
- texture->type_flags = 0;
- }
- switch (params.format) {
- case RTexFormat_RGB565:
- internal = format = GL_RGB; type = GL_UNSIGNED_SHORT_5_6_5; break;
- default:
- ATTO_ASSERT(!"Impossible texture format");
- }
- const GLenum binding = (params.type == RTexType_2D) ? GL_TEXTURE_2D : GL_TEXTURE_CUBE_MAP;
- const GLint wrap = (params.type == RTexType_2D) ? GL_REPEAT : GL_CLAMP;
- GL_CALL(glBindTexture(binding, texture->gl_name));
- GLenum upload_binding = binding;
- switch (params.type) {
- case RTexType_2D: upload_binding = GL_TEXTURE_2D; break;
- case RTexType_CubePX: upload_binding = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break;
- case RTexType_CubeNX: upload_binding = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break;
- case RTexType_CubePY: upload_binding = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break;
- case RTexType_CubeNY: upload_binding = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break;
- case RTexType_CubePZ: upload_binding = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break;
- case RTexType_CubeNZ: upload_binding = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break;
- }
- GL_CALL(glTexImage2D(upload_binding, 0, internal, params.width, params.height, 0,
- format, type, params.pixels));
- if (params.generate_mipmaps)
- GL_CALL(glGenerateMipmap(binding));
- GL_CALL(glTexParameteri(binding, GL_TEXTURE_MIN_FILTER, params.generate_mipmaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR));
- GL_CALL(glTexParameteri(binding, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
- GL_CALL(glTexParameteri(binding, GL_TEXTURE_WRAP_S, wrap));
- GL_CALL(glTexParameteri(binding, GL_TEXTURE_WRAP_T, wrap));
- texture->width = params.width;
- texture->height = params.height;
- texture->format = params.format;
- texture->type_flags |= params.type;
- }
- void renderBufferCreate(RBuffer *buffer, RBufferType type, int size, const void *data) {
- switch (type) {
- case RBufferType_Vertex: buffer->type = GL_ARRAY_BUFFER; break;
- case RBufferType_Index: buffer->type = GL_ELEMENT_ARRAY_BUFFER; break;
- default: ASSERT(!"Invalid buffer type");
- }
- GL_CALL(glGenBuffers(1, (GLuint*)&buffer->gl_name));
- GL_CALL(glBindBuffer(buffer->type, (GLuint)buffer->gl_name));
- GL_CALL(glBufferData(buffer->type, size, data, GL_STATIC_DRAW));
- }
- typedef struct {
- const char *name;
- int components;
- GLenum type;
- GLint normalize;
- int stride;
- const void *ptr;
- } RAttrib;
- typedef struct {
- const char *name;
- } RUniform;
- #define RENDER_LIST_ATTRIBS \
- RENDER_DECLARE_ATTRIB(vertex, 3, GL_FLOAT, GL_FALSE) \
- RENDER_DECLARE_ATTRIB(lightmap_uv, 2, GL_FLOAT, GL_FALSE) \
- RENDER_DECLARE_ATTRIB(tex_uv, 2, GL_FLOAT, GL_FALSE) \
- RENDER_DECLARE_ATTRIB(average_color, 3, GL_UNSIGNED_BYTE, GL_TRUE) \
- // RENDER_DECLARE_ATTRIB(normal, 3, GL_FLOAT)
- static const RAttrib attribs[] = {
- #define RENDER_DECLARE_ATTRIB(n,c,t,N) \
- {"a_" # n, c, t, N, sizeof(struct BSPModelVertex), (void*)offsetof(struct BSPModelVertex, n)},
- RENDER_LIST_ATTRIBS
- #undef RENDER_DECLARE_ATTRIB
- };
- enum RAttribKinds {
- #define RENDER_DECLARE_ATTRIB(n,c,t,N) \
- RAttribKind_ ## n,
- RENDER_LIST_ATTRIBS
- #undef RENDER_DECLARE_ATTRIB
- RAttribKind_COUNT
- };
- #define RENDER_LIST_UNIFORMS \
- RENDER_DECLARE_UNIFORM(mvp) \
- RENDER_DECLARE_UNIFORM(lmn) \
- RENDER_DECLARE_UNIFORM(lightmap) \
- RENDER_DECLARE_UNIFORM(tex0) \
- RENDER_DECLARE_UNIFORM(tex1) \
- RENDER_DECLARE_UNIFORM(tex0_size) \
- RENDER_DECLARE_UNIFORM(tex1_size) \
- RENDER_DECLARE_UNIFORM(tex2) \
- RENDER_DECLARE_UNIFORM(tex3) \
- RENDER_DECLARE_UNIFORM(tex4) \
- RENDER_DECLARE_UNIFORM(tex5) \
- RENDER_DECLARE_UNIFORM(cam_pos) \
- static const RUniform uniforms[] = {
- #define RENDER_DECLARE_UNIFORM(n) {"u_" # n},
- RENDER_LIST_UNIFORMS
- #undef RENDER_DECLARE_UNIFORM
- };
- enum RUniformKinds {
- #define RENDER_DECLARE_UNIFORM(n) RUniformKind_ ## n,
- RENDER_LIST_UNIFORMS
- #undef RENDER_DECLARE_UNIFORM
- RUniformKind_COUNT
- };
- typedef struct RProgram {
- GLint name;
- struct {
- const char *common, *vertex, *fragment;
- } shader_sources;
- int attrib_locations[RAttribKind_COUNT];
- int uniform_locations[RUniformKind_COUNT];
- } RProgram;
- enum {
- Program_LightmapColor,
- Program_LightmapTexture,
- Program_Skybox,
- Program_COUNT
- };
- static RProgram programs[Program_COUNT] = {
- /*LightmapColor*/
- {-1, {
- /*common*/
- "varying vec2 v_lightmap_uv;\n"
- "varying vec3 v_color;\n",
- /*vertex*/
- "attribute vec3 a_vertex, a_average_color;\n"
- "attribute vec2 a_lightmap_uv;\n"
- "uniform mat4 u_mvp;\n"
- "void main() {\n"
- "v_lightmap_uv = a_lightmap_uv;\n"
- "v_color = a_average_color;\n"
- "gl_Position = u_mvp * vec4(a_vertex, 1.);\n"
- "}\n",
- /*fragment*/
- "uniform sampler2D u_lightmap;\n"
- "void main() {\n"
- "gl_FragColor = vec4(v_color * texture2D(u_lightmap, v_lightmap_uv).xyz, 1.);\n"
- "}\n"
- },
- { -1 }, { -1 }
- },
- /*LightmapTexture*/
- {-1, {
- /*common*/
- "varying vec2 v_lightmap_uv, v_tex_uv;\n",
- /*vertex*/
- "attribute vec3 a_vertex;\n"
- "attribute vec2 a_lightmap_uv, a_tex_uv;\n"
- "uniform mat4 u_mvp;\n"
- "void main() {\n"
- "v_lightmap_uv = a_lightmap_uv;\n"
- "v_tex_uv = a_tex_uv;\n"
- "gl_Position = u_mvp * vec4(a_vertex, 1.);\n"
- "}\n",
- /*fragment*/
- "uniform sampler2D u_lightmap, u_tex0, u_tex1;\n"
- "uniform vec2 u_lightmap_size, u_tex0_size, u_tex1_size;\n"
- "uniform float u_lmn;\n"
- "void main() {\n"
- "vec3 tc = vec3(fract(v_tex_uv/u_tex0_size), 0.);\n"
- "vec4 albedo = texture2D(u_tex0, v_tex_uv/u_tex0_size);\n"
- "albedo = mix(albedo, texture2D(u_tex1, v_tex_uv/u_tex1_size), .0);\n"
- "vec3 lm = texture2D(u_lightmap, v_lightmap_uv).xyz;\n"
- "vec3 color = albedo.xyz * lm;\n"
- "gl_FragColor = vec4(mix(color, tc, u_lmn), 1.);\n"
- "}\n"
- },
- { -1 }, { -1 }
- },
- /* Skybox */
- {-1, { /* common */
- "varying vec2 v_uv;\n"
- "varying float texid;\n",
- /* vertex */
- "attribute vec3 a_vertex;\n"
- "uniform vec3 u_cam_pos;\n"
- "attribute vec2 a_tex_uv;\n"
- "attribute vec2 a_lightmap_uv;\n"
- "uniform mat4 u_mvp;\n"
- "void main() {\n"
- "v_uv = a_tex_uv;\n"
- "texid = a_lightmap_uv.x;\n"
- "gl_Position = u_mvp * vec4(u_cam_pos + 100000. * a_vertex, 1.);\n"
- "}\n",
- /* fragment */
- "uniform sampler2D u_tex0, u_tex1, u_tex2, u_tex3, u_tex4, u_tex5;\n"
- "void main() {\n"
- "if (texid < 1.) gl_FragColor = texture2D(u_tex0, v_uv);\n"
- "else if (texid < 2.) gl_FragColor = texture2D(u_tex1, v_uv);\n"
- "else if (texid < 3.) gl_FragColor = texture2D(u_tex2, v_uv);\n"
- "else if (texid < 4.) gl_FragColor = texture2D(u_tex3, v_uv);\n"
- "else if (texid < 5.) gl_FragColor = texture2D(u_tex4, v_uv);\n"
- "else gl_FragColor = texture2D(u_tex5, v_uv);\n"
- "}\n"
- }, {-1}, {-1}},
- };
- static struct BSPModelVertex box[] = {
- {{ 1.f, -1.f, -1.f}, {0.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, 1.f, -1.f}, {0.f, 0.f}, {1.f, 1.f}, {0, 0, 0}},
- {{ 1.f, 1.f, 1.f}, {0.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{ 1.f, 1.f, 1.f}, {0.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{ 1.f, -1.f, 1.f}, {0.f, 0.f}, {0.f, 0.f}, {0, 0, 0}},
- {{ 1.f, -1.f, -1.f}, {0.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{-1.f, -1.f, 1.f}, {1.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{-1.f, 1.f, 1.f}, {1.f, 0.f}, {1.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, -1.f}, {1.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, -1.f}, {1.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, -1.f, -1.f}, {1.f, 0.f}, {0.f, 0.f}, {0, 0, 0}},
- {{-1.f, -1.f, 1.f}, {1.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, -1.f, 1.f}, {2.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, 1.f, 1.f}, {2.f, 0.f}, {1.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, 1.f}, {2.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, 1.f}, {2.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, -1.f, 1.f}, {2.f, 0.f}, {0.f, 0.f}, {0, 0, 0}},
- {{ 1.f, -1.f, 1.f}, {2.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{-1.f, -1.f, -1.f}, {3.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{-1.f, 1.f, -1.f}, {3.f, 0.f}, {1.f, 1.f}, {0, 0, 0}},
- {{ 1.f, 1.f, -1.f}, {3.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{ 1.f, 1.f, -1.f}, {3.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{ 1.f, -1.f, -1.f}, {3.f, 0.f}, {0.f, 0.f}, {0, 0, 0}},
- {{-1.f, -1.f, -1.f}, {3.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, 1.f, 1.f}, {4.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, 1.f, -1.f}, {4.f, 0.f}, {1.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, -1.f}, {4.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, -1.f}, {4.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, 1.f, 1.f}, {4.f, 0.f}, {0.f, 0.f}, {0, 0, 0}},
- {{ 1.f, 1.f, 1.f}, {4.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, -1.f, -1.f}, {5.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- {{ 1.f, -1.f, 1.f}, {5.f, 0.f}, {1.f, 1.f}, {0, 0, 0}},
- {{-1.f, -1.f, 1.f}, {5.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, -1.f, 1.f}, {5.f, 0.f}, {0.f, 1.f}, {0, 0, 0}},
- {{-1.f, -1.f, -1.f}, {5.f, 0.f}, {0.f, 0.f}, {0, 0, 0}},
- {{ 1.f, -1.f, -1.f}, {5.f, 0.f}, {1.f, 0.f}, {0, 0, 0}},
- };
- static RBuffer box_buffer;
- static struct {
- const RTexture *current_tex0;
- const RProgram *current_program;
- struct {
- const float *mvp;
- float lmn;
- struct AVec3f campos;
- } uniforms;
- } r;
- static void renderApplyAttribs(const RAttrib *attribs, const RBuffer *buffer, unsigned int vbo_offset) {
- for(int i = 0; i < RAttribKind_COUNT; ++i) {
- const RAttrib *a = attribs + i;
- const int loc = r.current_program->attrib_locations[i];
- if (loc < 0) continue;
- GL_CALL(glEnableVertexAttribArray(loc));
- GL_CALL(glBindBuffer(GL_ARRAY_BUFFER, buffer->gl_name));
- GL_CALL(glVertexAttribPointer(loc, a->components, a->type, a->normalize, a->stride, (const char*)a->ptr + vbo_offset * sizeof(struct BSPModelVertex)));
- }
- }
- static int render_ProgramUse(RProgram *prog) {
- if (r.current_program == prog)
- return 0;
- if (r.current_program) {
- for (int i = 0; i < RAttribKind_COUNT; ++i) {
- const int loc = r.current_program->attrib_locations[i];
- if (loc >= 0)
- GL_CALL(glDisableVertexAttribArray(loc));
- }
- }
- GL_CALL(glUseProgram(prog->name));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_lightmap], 0));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_tex0], 1));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_tex1], 2));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_tex2], 3));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_tex3], 4));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_tex4], 5));
- GL_CALL(glUniform1i(prog->uniform_locations[RUniformKind_tex5], 6));
- GL_CALL(glUniformMatrix4fv(prog->uniform_locations[RUniformKind_mvp], 1, GL_FALSE, r.uniforms.mvp));
- GL_CALL(glUniform1f(prog->uniform_locations[RUniformKind_lmn], r.uniforms.lmn));
- GL_CALL(glUniform3f(prog->uniform_locations[RUniformKind_cam_pos], r.uniforms.campos.x, r.uniforms.campos.y, r.uniforms.campos.z));
- r.current_program = prog;
- r.current_tex0 = NULL;
- return 1;
- }
- static int render_ProgramInit(RProgram *prog) {
- GLuint program;
- GLuint vertex_shader, fragment_shader;
- const char *sources[] = {
- prog->shader_sources.common, prog->shader_sources.fragment, 0
- };
- fragment_shader = render_ShaderCreate(GL_FRAGMENT_SHADER, sources);
- if (fragment_shader == 0)
- return -1;
- sources[1] = prog->shader_sources.vertex;
- vertex_shader = render_ShaderCreate(GL_VERTEX_SHADER, sources);
- if (vertex_shader == 0) {
- GL_CALL(glDeleteShader(fragment_shader));
- return -2;
- }
- program = glCreateProgram();
- GL_CALL(glAttachShader(program, fragment_shader));
- GL_CALL(glAttachShader(program, vertex_shader));
- GL_CALL(glLinkProgram(program));
- GL_CALL(glDeleteShader(fragment_shader));
- GL_CALL(glDeleteShader(vertex_shader));
- #ifdef RENDER_ERRORCHECK
- {
- GLint status;
- GL_CALL(glGetProgramiv(program, GL_LINK_STATUS, &status));
- if (status != GL_TRUE) {
- char buffer[1024];
- GL_CALL(glGetProgramInfoLog(program, sizeof(buffer), 0, buffer));
- PRINTF("Program linking error: %s", buffer);
- GL_CALL(glDeleteProgram(program));
- return -3;
- }
- }
- #endif
- prog->name = program;
- for(int i = 0; i < RAttribKind_COUNT; ++i) {
- prog->attrib_locations[i] = glGetAttribLocation(prog->name, attribs[i].name);
- if (prog->attrib_locations[i] < 0)
- PRINTF("Cannot locate attribute %s", attribs[i].name);
- }
- for(int i = 0; i < RUniformKind_COUNT; ++i) {
- prog->uniform_locations[i] = glGetUniformLocation(prog->name, uniforms[i].name);
- if (prog->uniform_locations[i] < 0)
- PRINTF("Cannot locate uniform %s", uniforms[i].name);
- }
- return 0;
- }
- int renderInit() {
- #ifdef _WIN32
- #define WGL__FUNCLIST_DO(T, N) \
- gl##N = (T)wglGetProcAddress("gl" #N); \
- ASSERT(gl##N);
- WGL__FUNCLIST
- #undef WGL__FUNCLIST_DO
- #endif
- r.current_program = NULL;
- r.current_tex0 = NULL;
- r.uniforms.mvp = NULL;
- r.uniforms.lmn = 0;
- for (int i = 0; i < Program_COUNT; ++i) {
- if (render_ProgramInit(programs + i) != 0) {
- PRINTF("Cannot create program %d", i);
- return 0;
- }
- }
- struct Texture default_texture;
- RTextureUploadParams params;
- params.type = RTexType_2D;
- params.format = RTexFormat_RGB565;
- params.width = 2;
- params.height = 2;
- params.pixels = (uint16_t[]){0xffffu, 0, 0, 0xffffu};
- params.generate_mipmaps = 0;
- renderTextureInit(&default_texture.texture);
- renderTextureUpload(&default_texture.texture, params);
- cachePutTexture("opensource/placeholder", &default_texture);
- {
- struct Material default_material;
- memset(&default_material, 0, sizeof default_material);
- default_material.average_color = aVec3f(0.f, 1.f, 0.f);
- default_material.shader = MaterialShader_LightmappedAverageColor;
- cachePutMaterial("opensource/placeholder", &default_material);
- }
- {
- struct Material lightmap_color_material;
- memset(&lightmap_color_material, 0, sizeof lightmap_color_material);
- lightmap_color_material.average_color = aVec3f(0.f, 1.f, 0.f);
- lightmap_color_material.shader = MaterialShader_LightmappedAverageColor;
- cachePutMaterial("opensource/coarse", &lightmap_color_material);
- }
- renderBufferCreate(&box_buffer, RBufferType_Vertex, sizeof(box), box);
- GL_CALL(glEnable(GL_DEPTH_TEST));
- GL_CALL(glEnable(GL_CULL_FACE));
- return 1;
- }
- static int renderPrepareProgram(const struct BSPDraw *draw) {
- const struct Material *m = draw->material;
- int program_changed = 0;
- switch (m->shader) {
- case MaterialShader_LightmappedAverageColor:
- program_changed = render_ProgramUse(programs + Program_LightmapColor);
- break;
- case MaterialShader_LightmappedGeneric:
- program_changed = render_ProgramUse(programs + Program_LightmapTexture);
- break;
- default:
- ATTO_ASSERT(!"Impossible");
- }
- if (m->base_texture[0]) {
- const RTexture *t = &m->base_texture[0]->texture;
- if (t != r.current_tex0) {
- GL_CALL(glBindTexture(GL_TEXTURE_2D, t->gl_name));
- GL_CALL(glUniform2f(r.current_program->uniform_locations[RUniformKind_tex0_size], (float)t->width, (float)t->height));
- r.current_tex0 = t;
- }
- }
- return program_changed;
- }
- static void renderDrawSet(const struct BSPModel *model, const struct BSPDrawSet *drawset) {
- unsigned int vbo_offset = 0;
- for (int i = 0; i < drawset->draws_count; ++i) {
- const struct BSPDraw *draw = drawset->draws + i;
- if (renderPrepareProgram(draw) || i == 0 || draw->vbo_offset != vbo_offset) {
- vbo_offset = draw->vbo_offset;
- renderApplyAttribs(attribs, &model->vbo, draw->vbo_offset);
- }
- GL_CALL(glDrawElements(GL_TRIANGLES, draw->count, GL_UNSIGNED_SHORT, (void*)(sizeof(uint16_t) * draw->start)));
- }
- }
- static void renderBindTexture(const RTexture *texture, int slot) {
- GL_CALL(glActiveTexture(GL_TEXTURE0 + slot));
- GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->gl_name));
- }
- static void renderSkybox(const struct BSPModel *model) {
- render_ProgramUse(programs + Program_Skybox);
- for (int i = 0; i < 6; ++i)
- renderBindTexture(&model->skybox[i]->texture, 1+i);
- renderApplyAttribs(attribs, &box_buffer, 0);
- GL_CALL(glDisable(GL_CULL_FACE));
- GL_CALL(glDrawArrays(GL_TRIANGLES, 0, COUNTOF(box)));
- GL_CALL(glEnable(GL_CULL_FACE));
- }
- static float aMaxf(float a, float b) { return a > b ? a : b; }
- //static float aMinf(float a, float b) { return a < b ? a : b; }
- void renderModelDraw(const struct AMat4f *mvp, struct AVec3f camera_position, float lmn, const struct BSPModel *model) {
- if (!model->detailed.draws_count) return;
- GL_CALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, model->ibo.gl_name));
- renderBindTexture(&model->lightmap, 0);
- GL_CALL(glActiveTexture(GL_TEXTURE0 + 1));
- r.current_program = NULL;
- r.uniforms.mvp = &mvp->X.x;
- r.uniforms.lmn = lmn;
- r.uniforms.campos = camera_position;
- const float distance =
- aMaxf(aMaxf(
- aMaxf(camera_position.x - model->aabb.max.x, model->aabb.min.x - camera_position.x),
- aMaxf(camera_position.y - model->aabb.max.y, model->aabb.min.y - camera_position.y)),
- aMaxf(camera_position.z - model->aabb.max.z, model->aabb.min.z - camera_position.z));
- /*
- PRINTF("%f %f %f -> %f",
- camera_position.x, camera_position.y, camera_position.z, distance);
- */
- if (distance < 5000.f)
- renderDrawSet(model, &model->detailed);
- else
- renderDrawSet(model, &model->coarse);
- renderSkybox(model);
- }
- void renderResize(int w, int h) {
- glViewport(0, 0, w, h);
- }
- void renderClear() {
- glClearColor(.5f,.4f,.2f,0);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- }
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