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First cut at basic OpenGLES 2.0 renderer

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* Compiles/runs on Linux
    * X11 renderer is now deprecated
This commit is contained in:
Aaron Culliney 2014-09-16 20:49:57 -07:00
parent eb2e038bf0
commit df8ae3d018
7 changed files with 881 additions and 38 deletions
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17
Makefile.am
View File

@ -35,7 +35,8 @@ INTERFACE_CLASSIC_SRC = \
src/interface.c
VIDEO_SRC = \
src/video/xvideo.c
src/video/xvideo.c \
src/video/glvideo.c
AUDIO_SRC = \
src/audio/soundcore.c src/audio/soundcore-openal.c src/audio/speaker.c \
@ -90,7 +91,7 @@ A2_TEST_CFLAGS = -DTESTING=1 -Isrc/test
TESTS = testcpu testdisplay testvm
check_PROGRAMS = testcpu testdisplay testvm
testcpu_SOURCES = src/test/testcpu.c $(A2_TEST_SOURCES) $(META_SRC) $(VIDEO_SRC)
testcpu_SOURCES = src/test/testcpu.c $(A2_TEST_SOURCES) $(META_SRC)
testcpu_CFLAGS = $(apple2ix_CFLAGS) $(A2_TEST_CFLAGS) -UAUDIO_ENABLED -UINTERFACE_CLASSIC -DHEADLESS=1
testcpu_LDFLAGS = $(apple2ix_LDFLAGS)
testcpu_LDADD = @ASM_O@
@ -98,23 +99,23 @@ testcpu_DEPENDENCIES = @ASM_O@ @META_O@
EXTRA_testcpu_SOURCES = $(ASM_SRC_x86)
testdisplay_SOURCES = src/test/testdisplay.c $(A2_TEST_SOURCES) $(META_SRC) $(VIDEO_SRC)
testdisplay_SOURCES = src/test/testdisplay.c $(A2_TEST_SOURCES) $(META_SRC)
# HACK FIXME TODO NOTE: why don't these CFLAGS here pass down to the .S and .c files in the subdirectories?
testdisplay_CFLAGS = $(apple2ix_CFLAGS) $(A2_TEST_CFLAGS) -UAUDIO_ENABLED -UINTERFACE_CLASSIC -DHEADLESS=0
testdisplay_LDFLAGS = $(apple2ix_LDFLAGS)
testdisplay_LDADD = @ASM_O@
testdisplay_LDADD = @ASM_O@ @VIDEO_O@
testdisplay_DEPENDENCIES = @ASM_O@ @META_O@ @VIDEO_O@
EXTRA_testdisplay_SOURCES = $(ASM_SRC_x86)
EXTRA_testdisplay_SOURCES = $(ASM_SRC_x86) $(VIDEO_SRC)
testvm_SOURCES = src/test/testvm.c $(A2_TEST_SOURCES) $(META_SRC) $(VIDEO_SRC)
testvm_SOURCES = src/test/testvm.c $(A2_TEST_SOURCES) $(META_SRC)
# HACK FIXME TODO NOTE: why don't these CFLAGS here pass down to the .S and .c files in the subdirectories?
testvm_CFLAGS = $(apple2ix_CFLAGS) $(A2_TEST_CFLAGS) -UAUDIO_ENABLED -UINTERFACE_CLASSIC -DHEADLESS=0
testvm_LDFLAGS = $(apple2ix_LDFLAGS)
testvm_LDADD = @ASM_O@
testvm_LDADD = @ASM_O@ @VIDEO_O@
testvm_DEPENDENCIES = @ASM_O@ @META_O@ @VIDEO_O@
EXTRA_testvm_SOURCES = $(ASM_SRC_x86)
EXTRA_testvm_SOURCES = $(ASM_SRC_x86) $(VIDEO_SRC)
###############################################################################
# Misc

71
configure.ac
View File

@ -120,7 +120,7 @@ AM_PROG_LEX
dnl AS_IF([test "x$LEX" = "xno"], [
dnl AC_MSG_ERROR([Emulator needs lex/flex to build source...])
dnl ], [
dnl AC_MSG_WARN([Found lex $LEX])
dnl AC_MSG_RESULT([Found lex $LEX])
dnl ])
dnl POSIX high-precision clock
@ -142,29 +142,70 @@ AC_SEARCH_LIBS(pthread_create, pthread, [], [
AC_MSG_ERROR([Emulator requires pthread library to build...])
], [])
AC_SEARCH_LIBS(sqrtf, m, [], [
AC_MSG_ERROR([Emulator requires math library to build...])
], [])
dnl ---------------------------------------------------------------------------
dnl Video ...
dnl currently X11 is required ...
AC_PATH_XTRA
AC_CHECK_HEADER(X11/XKBlib.h, [], [
AC_MSG_ERROR([Emulator needs X11 headers to build this software...])
])
AC_SEARCH_LIBS(XPutImage, [X11], [], [
AC_MSG_ERROR([Emulator need X11 libraries to build the emulator...])
], [-LX11])
AC_SEARCH_LIBS(XShmAttach, Xext, [
AC_DEFINE(HAVE_X11_SHM, 1, [Enable X11 MIT SHM extension])
opengl_selected='yes'
AC_ARG_ENABLE([opengl], AS_HELP_STRING([--disable-opengl], [Disable OpenGL video driver (uses regular X11)]), [
opengl_selected='no'
], [
AC_MSG_WARN([Building emulator without support of X11 MITSHM extension...])
], [-lX11])
AC_CHECK_HEADER(GL/glew.h, [
AC_CHECK_HEADER(GL/freeglut.h, [
AC_SEARCH_LIBS(glCreateProgram, [GL], [
AC_SEARCH_LIBS(glutMainLoop, [glut freeglut], [
AC_SEARCH_LIBS(glewInit, [GLEW glew], [
opengl_supported='yes'
AC_DEFINE(VIDEO_OPENGL, 1, [Use OpenGL])
VIDEO_O="src/video/glvideo.o"
AC_MSG_RESULT([Building emulator with OpenGL support, w00t!])
], [
AC_MSG_WARN([Did not find OpenGL GLEW library...])
], [-lGL -lGLEW -lglut])
], [
AC_MSG_WARN([Did not find glut library...])
], [-lGL -lGLEW -lglut])
], [
AC_MSG_WARN([Did not find OpenGL library...])
], [-lGL])
], [
AC_MSG_WARN([Did not find GL/freeglut.h header ...])
])
], [
AC_MSG_WARN([Did not find GL/glew.h header ...])
])
])
AS_IF([test "x$opengl_supported" = "xyes"], [
], [
dnl OpenGL not supported
AS_IF([test "x$opengl_selected" = "xyes"], [
AC_MSG_WARN([Did not find OpenGL libraries, will attempt to build legacy X11 variant ...])
], [])
AC_CHECK_HEADER(X11/XKBlib.h, [
AC_SEARCH_LIBS(XPutImage, [X11], [
AC_SEARCH_LIBS(XShmAttach, Xext, [
AC_DEFINE(HAVE_X11_SHM, 1, [Enable X11 MIT SHM extension])
], [
AC_MSG_WARN([Building emulator without support of X11 MITSHM extension...])
], [-lX11])
VIDEO_O="src/video/xvideo.o"
], [
AC_MSG_ERROR([Did not find OpenGL nor X11 libraries...])
], [-LX11])
], [
AC_MSG_ERROR([Did not find OpenGL nor X11 headers...])
])
])
VIDEO_O="src/video/xvideo.o"
AC_SUBST(VIDEO_O)
AC_DEFINE(HEADLESS, 0, [Set to 1 to disable video output driver])
dnl ---------------------------------------------------------------------------

64
src/common.h
View File

@ -54,6 +54,14 @@
#include "uthash.h"
#include "zlib-helpers.h"
#if VIDEO_OPENGL
#include "video/vgl.h"
#else
#define GLint int
#define glGetError() 0
#endif
#ifdef DEBUGGER
#include "meta/debug.h"
#endif
@ -75,35 +83,60 @@
extern bool do_logging;
extern FILE *error_log;
#define QUIT_FUNCTION(x) exit(x)
#define _LOG(...) \
int saverr = errno; \
int _err = errno; \
errno = 0; \
fprintf(error_log, "%s:%d - ", __FILE__, __LINE__); \
fprintf(error_log, __VA_ARGS__); \
if (saverr) { \
fprintf(error_log, " (syserr: %s)", strerror(saverr)); \
if (_err) { \
fprintf(error_log, " (syserr: %s)", strerror(_err)); \
} \
if (_glerr) { \
fprintf(error_log, " (OOPS glerr:%04X)", _glerr); \
} \
fprintf(error_log, "\n");
#ifndef NDEBUG
#define ERRLOG(...) \
if (do_logging) { \
_LOG(__VA_ARGS__); \
}
#define ERRQUIT(...) \
if (do_logging) { \
_LOG(__VA_ARGS__); \
} \
exit(1);
#define LOG(...) \
if (do_logging) { \
errno = 0; \
GLint _glerr = 0; \
_LOG(__VA_ARGS__); \
}
#define ERRLOG(...) \
if (do_logging) { \
GLint _glerr = glGetError(); \
_LOG(__VA_ARGS__); \
}
#define GL_ERRLOG(...) \
if (do_logging) { \
GLint _glerr = glGetError(); \
if (_glerr) { \
_LOG(__VA_ARGS__); \
} \
}
#define ERRQUIT(...) \
do { \
GLint _glerr = glGetError(); \
_LOG(__VA_ARGS__); \
QUIT_FUNCTION(1); \
} while(0)
#define GL_ERRQUIT(...) \
do { \
GLint _glerr = glGetError(); \
if (_glerr) { \
_LOG( __VA_ARGS__); \
QUIT_FUNCTION(_glerr); \
} \
} while(0)
#else // NDEBUG
#define ERRLOG(...) \
@ -115,7 +148,7 @@ extern FILE *error_log;
#define LOG(...) \
do { } while(0);
#endif
#endif // NDEBUG
#define RELEASE_ERRLOG(...) \
do { \
@ -124,6 +157,7 @@ extern FILE *error_log;
#define RELEASE_LOG(...) \
do { \
GLint _glerr = glGetError(); \
errno = 0; \
_LOG(__VA_ARGS__); \
} while(0);

13
src/video/Basic.frag Normal file
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@ -0,0 +1,13 @@
static const char * fragmentShader =
"#version 100\n"
"varying lowp vec4 DestinationColor;\n"
"varying mediump vec2 TextureCoordOut;\n"
"uniform sampler2D Sampler;\n"
"void main(void) {\n"
" //gl_FragColor = texture2D(Sampler, TextureCoordOut) * DestinationColor;\n"
" gl_FragColor = texture2D(Sampler, TextureCoordOut);\n"
"}"
;

24
src/video/Basic.vert Normal file
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@ -0,0 +1,24 @@
static const char * vertexShader =
"#version 100\n"
"attribute vec4 Position;\n"
"attribute vec2 TextureCoord;\n"
"//attribute vec4 TestColor;\n"
"// base screen scolor\n"
"uniform vec4 SourceColor;\n"
"uniform mat4 Projection;\n"
"uniform mat4 Modelview;\n"
"varying vec4 DestinationColor;\n"
"varying vec2 TextureCoordOut;\n"
"void main(void) {\n"
" DestinationColor = SourceColor;\n"
" //DestinationColor = TestColor;\n"
" //gl_Position = Projection * Modelview * Position;\n"
" gl_Position = Position;\n"
" TextureCoordOut = TextureCoord;\n"
"}\n"
;

702
src/video/glvideo.c Normal file
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@ -0,0 +1,702 @@
/*
* Apple // emulator for *nix
*
* This software package is subject to the GNU General Public License
* version 2 or later (your choice) as published by the Free Software
* Foundation.
*
* THERE ARE NO WARRANTIES WHATSOEVER.
*
*/
// glvideo -- Created by Aaron Culliney
#include "common.h"
#include "video/vgl.h"
#if 0
#include "video/matmath.h"
#endif
#include "video/Basic.vert"
#include "video/Basic.frag"
#define DEBUG_GEOMETRY 0
typedef struct UniformHandles {
GLuint modelview;
GLuint projection;
GLuint sourceColor;
} UniformHandles;
typedef struct AttributeHandles {
GLuint position;
GLuint texCoord;
#if DEBUG_GEOMETRY
GLuint testColor;
#endif
} AttributeHandles;
typedef struct Drawable {
GLuint vertexBuffer;
GLuint indexBuffer;
int vertexCount;
int indexCount;
bool allocated;
} Drawable;
typedef struct ShaderInfo {
GLuint shader;
GLenum type;// GL shader type
const char *shadername;
const GLchar *source;
UT_hash_handle hh;
} ShaderInfo;
static GLuint colorRenderbuffer = 0;
static int windowWidth = SCANWIDTH*1.5;
static int windowHeight = SCANHEIGHT*1.5;
static int viewportX = 0;
static int viewportY = 0;
static int viewportWidth = SCANWIDTH*1.5;
static int viewportHeight = SCANHEIGHT*1.5;
//static GLuint depthRenderbuffer = 0;
#if 0
static matT translation = {};
#endif
static GLuint a2framebufferTexture = 0;
static UniformHandles uniforms = { 0 };
static AttributeHandles attributes = { 0 };
static Drawable crtDrawable = { 0 };
static ShaderInfo *allShaders = NULL;
static GLuint program = 0;
//----------------------------------------------------------------------------
//
// compile/link/load shaders
//
static GLuint _load_shaders(ShaderInfo *shaders) {
if (shaders == NULL) {
return 0;
}
GLuint program = glCreateProgram();
if (!program) {
GL_ERRLOG("glCreateProgram");
return 0;
}
ShaderInfo *entry = shaders;
while (entry->type != GL_NONE) {
GLuint shader = glCreateShader(entry->type);
entry->shader = shader;
if (!shader || !entry->source) {
for (entry = shaders; entry->type != GL_NONE; ++entry) {
glDeleteShader(entry->shader);
entry->shader = 0;
}
return 0;
}
glShaderSource(shader, 1, &entry->source, NULL);
glCompileShader( shader );
GL_ERRLOG("glCompileShader");
GLint compiled = 0;
glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
if (!compiled) {
GLsizei len = 0;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &len);
GLchar* log = (GLchar*)malloc(sizeof(GLchar)*(len+1));
glGetShaderInfoLog(shader, len, &len, log);
ERRQUIT("Shader '%s' compilation failed: %s", entry->shadername, log);
free(log);
return 0;
}
glAttachShader(program, shader);
++entry;
}
glLinkProgram(program);
GL_ERRLOG("glLinkProgram");
GLint linked = 0;
glGetProgramiv(program, GL_LINK_STATUS, &linked);
if (!linked) {
GLsizei len;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &len);
GLchar* log = (GLchar*)malloc(sizeof(GLchar)*(len+1));
glGetProgramInfoLog(program, len, &len, log);
ERRQUIT("Shader '%s' linking failed: %s", entry->shadername, log);
free(log);
for (entry = shaders; entry->type != GL_NONE; ++entry) {
glDeleteShader(entry->shader);
entry->shader = 0;
}
return 0;
}
return program;
}
static void _create_gl_program(void) {
ShaderInfo shaders[] = {
{ .type=GL_VERTEX_SHADER, .shadername="vertex shader", .source=vertexShader },
{ .type=GL_FRAGMENT_SHADER, .shadername="fragment shader", .source=fragmentShader },
{ .type=GL_NONE, .shadername=NULL, .source=NULL }
};
program = _load_shaders(shaders);
glUseProgram(program);
GL_ERRLOG("glUseProgram");
ShaderInfo *info = calloc(1, sizeof(ShaderInfo));
memcpy(info, &shaders[0], sizeof(ShaderInfo));
HASH_ADD_INT(allShaders, /*index*/shader, /*new node*/info);
info = calloc(1, sizeof(ShaderInfo));
memcpy(info, &shaders[1], sizeof(ShaderInfo));
HASH_ADD_INT(allShaders, /*index*/shader, /*new node*/info);
// TODO : other shader effects, for example NTSC noise, CRT glitches, pixel bloom, etc ...
}
//----------------------------------------------------------------------------
//
// generate/manage vertices for the Cathode Ray Tube object
//
static void _generate_crt_object(void) {
// TODO FIXME: use actual 3D CRT surface with vertices/indices dynamically generated based on
// screen dimensions / device DPI
if (crtDrawable.allocated) {
glDeleteBuffers(1, &crtDrawable.vertexBuffer);
glDeleteBuffers(1, &crtDrawable.indexBuffer);
crtDrawable.allocated = false;
}
#define STRIDE 9*sizeof(GLfloat)
#define TEST_COLOR_OFF (GLvoid *)(3*sizeof(GLfloat))
#define TEX_COORD_OFF (GLvoid *)(7*sizeof(GLfloat))
// NOTE: vertices in Normalized Device Coordinates
const GLuint numverts = 6;
GLfloat vrt[] = {
-1.0, -1.0, 0.0, /*color*/1.0,1.0,1.0,1.0, /*interleaved tex coord:*/0.0, 1.0,// Triangle 1
1.0, -1.0, 0.0, /*color*/1.0,1.0,1.0,1.0, /*interleaved tex coord:*/1.0, 1.0,
-1.0, 1.0, 0.0, /*color*/1.0,1.0,1.0,1.0, /*interleaved tex coord:*/0.0, 0.0,
-1.0, 1.0, 0.0, /*color*/1.0,1.0,1.0,1.0, /*interleaved tex coord:*/0.0, 0.0,// Triangle 2
1.0, -1.0, 0.0, /*color*/1.0,1.0,1.0,1.0, /*interleaved tex coord:*/1.0, 1.0,
1.0, 1.0, 0.0, /*color*/1.0,1.0,1.0,1.0, /*interleaved tex coord:*/1.0, 0.0,
};
const GLuint numindices = 6;
const GLushort ind[] = {
0, 1, 2, 3, 4, 5
};
// Create VBO for the vertices
glGenBuffers(1, &crtDrawable.vertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, crtDrawable.vertexBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vrt), &vrt[0], GL_STATIC_DRAW);
GL_ERRLOG("vertex buffer setup");
// Create VBO for the indices
glGenBuffers(1, &crtDrawable.indexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, crtDrawable.indexBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(ind), &ind[0], GL_STATIC_DRAW);
GL_ERRLOG("element buffer setup");
crtDrawable.vertexCount = numverts;
crtDrawable.indexCount = numindices;
crtDrawable.allocated = true;
}
//----------------------------------------------------------------------------
//
// initialization routines
//
static void vdriver_init_common(void) {
glGenRenderbuffers(1, &colorRenderbuffer);
glBindRenderbuffer(GL_RENDERBUFFER, colorRenderbuffer);
_generate_crt_object();
// Extract width and height from the color buffer.
int width, height;
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width);
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height);
#if 0
// Create a depth buffer that has the same size as the color buffer.
glGenRenderbuffers(1, &depthRenderbuffer);
glBindRenderbuffer(GL_RENDERBUFFER, depthRenderbuffer);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
#endif
// Create the framebuffer object.
GLuint framebuffer = 0;
glGenFramebuffers(1, &framebuffer);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, colorRenderbuffer);
//glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthRenderbuffer);
glBindRenderbuffer(GL_RENDERBUFFER, colorRenderbuffer);
GL_ERRLOG("renderbuffer setup");
// Create the GLSL program.
_create_gl_program();
// Extract the handles to attributes and uniforms
attributes.position = glGetAttribLocation(program, "Position");
GL_ERRLOG("glGetAttribLocation");
#if DEBUG_GEOMETRY
attributes.testColor = glGetAttribLocation(program, "TestColor");
GL_ERRQUIT("cannot get TestColor attribute location for DEBUG_GEOMETRY preprocessor configuration");
#endif
attributes.texCoord = glGetAttribLocation(program, "TextureCoord");
uniforms.projection = glGetUniformLocation(program, "Projection");
LOG("projection = %d", uniforms.projection);
uniforms.modelview = glGetUniformLocation(program, "Modelview");
LOG("modelview = %d", uniforms.modelview);
uniforms.sourceColor = glGetUniformLocation(program, "SourceColor");
LOG("sourceColor = %d", uniforms.sourceColor);
// Set up to use Apple //e framebuffer as texture
glGenTextures(1, &a2framebufferTexture);
GL_ERRLOG("glGenTextures");
glBindTexture(GL_TEXTURE_2D, a2framebufferTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR/*GL_NEAREST*/);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR/*GL_NEAREST*/);
//glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
//glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D, /*level*/0, /*internal format*/GL_RGBA, width, height, /*border*/0, /*format*/GL_RGBA, GL_UNSIGNED_BYTE, 0);
GL_ERRLOG("glTexImage2D");
// Initialize various state
glEnableVertexAttribArray(attributes.position);
GL_ERRLOG("glEnableVertexAttribArray");
#if DEBUG_GEOMETRY
glEnableVertexAttribArray(attributes.testColor);
GL_ERRLOG("glEnableVertexAttribArray");
#endif
glEnableVertexAttribArray(attributes.texCoord);
GL_ERRLOG("glEnableVertexAttribArray");
//glEnable(GL_DEPTH_TEST);
glClearColor(0.2, 0.2f, 0.2f, 1);
#if 0
// Set up transforms
translation = mat4_translate_xyz(0.f, 0.f, -7.f, MAT4);
#endif
#if !defined(__APPLE__)
glBindFramebuffer(GL_FRAMEBUFFER, 0);
GL_ERRLOG("bind main framebuffer");
#endif
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
ERRQUIT("framebuffer status: %04X", status);
}
}
//----------------------------------------------------------------------------
//
// keyboard
//
// Map glut keys into Apple//ix internal-representation scancodes.
static int _glutkey_to_scancode(int key) {
static bool modified_caps_lock = false;
// NOTE : Unfortunately it appears that we cannot get a raw key down/up notification for CAPSlock, so hack that here
// ALSO : Emulator initially sets CAPS state based on a user preference, but sync to system state if user changes it
int modifiers = glutGetModifiers();
if (!c_keys_is_shifted()) {
if (modifiers & GLUT_ACTIVE_SHIFT) {
modified_caps_lock = true;
caps_lock = true;
} else if (modified_caps_lock) {
caps_lock = false;
}
}
switch (key) {
case GLUT_KEY_F1:
key = SCODE_F1;
break;
case GLUT_KEY_F2:
key = SCODE_F2;
break;
case GLUT_KEY_F3:
key = SCODE_F3;
break;
case GLUT_KEY_F4:
key = SCODE_F4;
break;
case GLUT_KEY_F5:
key = SCODE_F5;
break;
case GLUT_KEY_F6:
key = SCODE_F6;
break;
case GLUT_KEY_F7:
key = SCODE_F7;
break;
case GLUT_KEY_F8:
key = SCODE_F8;
break;
case GLUT_KEY_F9:
key = SCODE_F9;
break;
case GLUT_KEY_F10:
key = SCODE_F10;
break;
case GLUT_KEY_F11:
key = SCODE_F11;
break;
case GLUT_KEY_F12:
key = SCODE_F12;
break;
case GLUT_KEY_LEFT:
key = SCODE_L;
break;
case GLUT_KEY_RIGHT:
key = SCODE_R;
break;
case GLUT_KEY_DOWN:
key = SCODE_D;
break;
case GLUT_KEY_UP:
key = SCODE_U;
break;
case GLUT_KEY_PAGE_UP:
key = SCODE_PGUP;
break;
case GLUT_KEY_PAGE_DOWN:
key = SCODE_PGDN;
break;
case GLUT_KEY_HOME:
key = SCODE_HOME;
break;
case GLUT_KEY_END:
key = SCODE_END;
break;
case GLUT_KEY_INSERT:
key = SCODE_INS;
break;
case GLUT_KEY_SHIFT_L:
key = SCODE_L_SHIFT;
break;
case GLUT_KEY_SHIFT_R:
key = SCODE_R_SHIFT;
break;
case GLUT_KEY_CTRL_L:
key = SCODE_L_CTRL;
break;
case GLUT_KEY_CTRL_R:
key = SCODE_R_CTRL;
break;
case GLUT_KEY_ALT_L:
key = SCODE_L_ALT;
break;
case GLUT_KEY_ALT_R:
key = SCODE_R_ALT;
break;
//---------------------------------------------------------------------
// GLUT does not appear to handle these PC keys ...
#if 0
case XK_Pause:
key = SCODE_PAUSE;
break;
case XK_Break:
/* Pause and Break are the same key, but have different
* scancodes (on PC keyboards). Ctrl makes the difference.
*
* We assume the X server is passing along the distinction to us,
* rather than making us check Ctrl manually.
*/
key = SCODE_BRK;
break;
case XK_Print:
key = SCODE_PRNT;
break;
#endif
//---------------------------------------------------------------------
// GLUT does not appear to differentiate keypad keys?
//case XK_KP_5:
case GLUT_KEY_BEGIN:
key = SCODE_KPAD_C;
break;
#if 0
case XK_KP_4:
case XK_KP_Left:
key = SCODE_KPAD_L;
break;
case XK_KP_8:
case XK_KP_Up:
key = SCODE_KPAD_U;
break;
case XK_KP_6:
case XK_KP_Right:
key = SCODE_KPAD_R;
break;
case XK_KP_2:
case XK_KP_Down:
key = SCODE_KPAD_D;
break;
case XK_KP_7:
case XK_KP_Home:
key = SCODE_KPAD_UL;
break;
case XK_KP_9:
case XK_KP_Page_Up:
key = SCODE_KPAD_UR;
break;
case XK_KP_1:
case XK_KP_End:
key = SCODE_KPAD_DL;
break;
case XK_KP_3:
case XK_KP_Page_Down:
key = SCODE_KPAD_DR;
break;
#endif
default:
key = c_keys_ascii_to_scancode(key);
break;
}
assert(key < 0x80);
return key;
}
#if !defined(TESTING)
static void vdriver_on_key_down(unsigned char key, int x, int y) {
// no input processing if test-driven ...
int scancode = _glutkey_to_scancode(key);
LOG("onKeyDown %02x '%c' -> %02X", key, key, scancode);
c_keys_handle_input(scancode, 1);
}
static void vdriver_on_key_up(unsigned char key, int x, int y) {
int scancode = _glutkey_to_scancode(key);
LOG("onKeyUp %02x '%c' -> %02X", key, key, scancode);
c_keys_handle_input(scancode, 0);
}
static void vdriver_on_key_special_down(int key, int x, int y) {
int scancode = _glutkey_to_scancode(key);
LOG("onKeySpecialDown %08x -> %02X", key, scancode);
c_keys_handle_input(scancode, 1);
}
static void vdriver_on_key_special_up(int key, int x, int y) {
int scancode = _glutkey_to_scancode(key);
LOG("onKeySpecialUp %08x -> %02X", key, scancode);
c_keys_handle_input(scancode, 0);
}
#endif
//----------------------------------------------------------------------------
//
// mouse
//
#if 0
static void vdriver_drag(int x, int y) {
//LOG("drag %d,%d", x, y);
ivec2 currentMouse(x, y);
applicationEngine->OnFingerMove(previousMouse, currentMouse);
previousMouse.x = x;
previousMouse.y = y;
}
static void vdriver_mouse(int button, int state, int x, int y) {
LOG("mouse button:%d state:%d %d,%d", button, state, x, y);
if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN) {
previousMouse.x = x;
previousMouse.y = y;
applicationEngine->OnFingerDown(ivec2(x, y));
} else if (button == GLUT_LEFT_BUTTON && state == GLUT_UP) {
applicationEngine->OnFingerUp(ivec2(x, y));
}
}
#endif
//----------------------------------------------------------------------------
//
// update, display, reshape
//
static void vdriver_update(void) {
glutPostRedisplay();
}
static void vdriver_display(void) {
if (is_headless) {
return;
}
glClear(GL_COLOR_BUFFER_BIT/*| GL_DEPTH_BUFFER_BIT*/);
// Set the viewport transform.
glViewport(viewportX, viewportY, viewportWidth, viewportHeight);
// Set the source color
GLfloat sourceColor[] = { 1.f, 1.f, 1.f, 1.f };
glUniform4fv(uniforms.sourceColor, 1, &sourceColor[0]);
GL_ERRQUIT("glUniform4fv");
#if 0
// Set the model-view transform.
matT rotation = mat_identity();
matT modelview = mat_mult_mat(rotation, translation, MAT4);
glUniformMatrix4fv(uniforms.modelview, 1, 0, MAT_POINTER(modelview));
GL_ERRQUIT("glUniformMatrix4fv");
// Set the projection transform.
float h = 4.0f * windowHeight / windowWidth;
matT projectionMatrix = mat4_frustum(-2, 2, -h / 2, h / 2, 5, 10);
glUniformMatrix4fv(uniforms.projection, 1, 0, MAT_POINTER(projectionMatrix));
GL_ERRQUIT("glUniformMatrix4fv");
#endif
// texture ...
const uint8_t * const fb = video_current_framebuffer();
uint8_t index;
#warning FIXME TODO use memcpy?
unsigned int count = SCANWIDTH * SCANHEIGHT;
char pixels[SCANWIDTH * SCANHEIGHT * 4];
for (unsigned int i=0, j=0; i<count; i++, j+=4) {
index = *(fb + i);
*( (uint32_t*)(pixels + j) ) = (uint32_t)(
((uint32_t)(colormap[index].red) << 0 ) |
((uint32_t)(colormap[index].green) << 8 ) |
((uint32_t)(colormap[index].blue) << 16) |
((uint32_t)0xff << 24)
);
}
glBindTexture(GL_TEXTURE_2D, a2framebufferTexture);
#if 0
int width, height;
void *test_pixels = test_texture(&width, &height);
glTexImage2D(GL_TEXTURE_2D, /*level*/0, /*internal format*/GL_RGBA, width, height, /*border*/0, /*format*/GL_RGBA, GL_UNSIGNED_BYTE, test_pixels);
#else
glTexImage2D(GL_TEXTURE_2D, /*level*/0, /*internal format*/GL_RGBA, SCANWIDTH, SCANHEIGHT, /*border*/0, /*format*/GL_RGBA, GL_UNSIGNED_BYTE, (GLvoid *)&pixels[0]);
#endif
GL_ERRLOG("glTexImage2D");
// Draw the CRT object and the apple2 framebuffer as a texture
glBindBuffer(GL_ARRAY_BUFFER, crtDrawable.vertexBuffer);
glVertexAttribPointer(attributes.position, 3, GL_FLOAT, GL_FALSE, STRIDE, 0);
#if DEBUG_GEOMETRY
glVertexAttribPointer(attributes.testColor, 4, GL_FLOAT, GL_FALSE, STRIDE, TEST_COLOR_OFF);
#endif
glVertexAttribPointer(attributes.texCoord, 2, GL_FLOAT, GL_FALSE, STRIDE, TEX_COORD_OFF);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, crtDrawable.indexBuffer);
glDrawElements(GL_TRIANGLES, crtDrawable.indexCount, GL_UNSIGNED_SHORT, 0);
GL_ERRLOG("glDrawElements");
glutSwapBuffers();
}
static void vdriver_reshape(int w, int h) {
LOG("reshape to w:%d h:%d", w, h);
windowWidth = w;
windowHeight = h;
int w2 = ((float)h * (SCANWIDTH/(float)SCANHEIGHT));
int h2 = ((float)w / (SCANWIDTH/(float)SCANHEIGHT));
if (w2 <= w) {
// h is priority
viewportX = (w-w2)/2;
viewportY = 0;
viewportWidth = w2;
viewportHeight = h;
LOG("OK1 : x:%d,y:%d w:%d,h:%d", viewportX, viewportY, viewportWidth, viewportHeight);
} else if (h2 <= h) {
viewportX = 0;
viewportY = (h-h2)/2;
viewportWidth = w;
viewportHeight = h2;
LOG("OK2 : x:%d,y:%d w:%d,h:%d", viewportX, viewportY, viewportWidth, viewportHeight);
} else {
viewportX = 0;
viewportY = 0;
viewportWidth = w;
viewportHeight = h;
LOG("small viewport : x:%d,y:%d w:%d,h:%d", viewportX, viewportY, viewportWidth, viewportHeight);
}
}
//----------------------------------------------------------------------------
void video_set_mode(a2_video_mode_t mode) {
// no-op ...
}
void video_driver_init(void) {
#if defined(__APPLE__)
vdriver_init_common();
#else
glutInit(&argc, argv);
glutInitDisplayMode(/*GLUT_DOUBLE|*/GLUT_RGBA/*|GLUT_DEPTH*/);
glutInitWindowSize(windowWidth, windowHeight);
//glutInitContextVersion(4, 0); -- Is this needed?
glutInitContextProfile(GLUT_CORE_PROFILE);
glutCreateWindow(PACKAGE_NAME);
GL_ERRQUIT("GLUT initialization");
if (glewInit()) {
ERRQUIT("Unable to initialize GLEW");
}
vdriver_init_common();
glutIdleFunc(vdriver_update);
glutDisplayFunc(vdriver_display);
glutReshapeFunc(vdriver_reshape);
//glutMouseFunc(vdriver_mouse);
//glutMotionFunc(vdriver_drag);
#if !defined(TESTING)
glutKeyboardFunc(vdriver_on_key_down);
glutKeyboardUpFunc(vdriver_on_key_up);
glutSpecialFunc(vdriver_on_key_special_down);
glutSpecialUpFunc(vdriver_on_key_special_up);
#endif
#endif // !__APPLE__
}
void video_driver_main_loop(void) {
glutMainLoop();
}
void video_driver_sync(void) {
if (is_headless) {
return;
}
glutPostRedisplay();
}
void video_driver_shutdown(void) {
// no-op ...
}

28
src/video/vgl.h Normal file
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@ -0,0 +1,28 @@
/*
* Apple // emulator for *nix
*
* This software package is subject to the GNU General Public License
* version 2 or later (your choice) as published by the Free Software
* Foundation.
*
* THERE ARE NO WARRANTIES WHATSOEVER.
*
*/
// OpenGL header includes
// #define USE_GL3W
#if defined(__APPLE__)
# include <OpenGLES/ES2/gl.h>
# include <OpenGLES/ES2/glext.h>
#elif defined(USE_GL3W)
# include <GL3/gl3.h>
# include <GL3/gl3w.h>
#else
# define GLEW_STATIC
# include <GL/glew.h>
# define FREEGLUT_STATIC
# include <GL/freeglut.h>
#endif