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Remove QueueDrawLines from GL, GLES, GLES2

This commit is contained in:
Sylvain 2022-01-07 22:42:52 +01:00 committed by Sam Lantinga
parent 8ea8b2e697
commit 9aac55317d
3 changed files with 4 additions and 194 deletions
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54
src/render/opengl/SDL_render_gl.c
View File

@ -941,47 +941,6 @@ GL_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FP
return 0;
}
static int
GL_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
{
int i;
GLfloat prevx, prevy;
const size_t vertlen = (sizeof (GLfloat) * 2) * count;
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
/* 0.5f offset to hit the center of the pixel. */
prevx = 0.5f + points->x;
prevy = 0.5f + points->y;
*(verts++) = prevx;
*(verts++) = prevy;
/* bump the end of each line segment out a quarter of a pixel, to provoke
the diamond-exit rule. Without this, you won't just drop the last
pixel of the last line segment, but you might also drop pixels at the
edge of any given line segment along the way too. */
for (i = 1; i < count; i++) {
const GLfloat xstart = prevx;
const GLfloat ystart = prevy;
const GLfloat xend = points[i].x + 0.5f; /* 0.5f to hit pixel center. */
const GLfloat yend = points[i].y + 0.5f;
/* bump a little in the direction we are moving in. */
const GLfloat deltax = xend - xstart;
const GLfloat deltay = yend - ystart;
const GLfloat angle = SDL_atan2f(deltay, deltax);
prevx = xend + (SDL_cosf(angle) * 0.25f);
prevy = yend + (SDL_sinf(angle) * 0.25f);
*(verts++) = prevx;
*(verts++) = prevy;
}
return 0;
}
static int
GL_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const float *xy, int xy_stride, const SDL_Color *color, int color_stride, const float *uv, int uv_stride,
@ -1111,7 +1070,6 @@ SetDrawState(GL_RenderData *data, const SDL_RenderCommand *cmd, const GL_Shader
}
vertex_array = cmd->command == SDL_RENDERCMD_DRAW_POINTS
|| cmd->command == SDL_RENDERCMD_DRAW_LINES
|| cmd->command == SDL_RENDERCMD_GEOMETRY;
color_array = cmd->command == SDL_RENDERCMD_GEOMETRY;
texture_array = cmd->data.draw.texture != NULL;
@ -1286,17 +1244,8 @@ GL_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
break;
}
case SDL_RENDERCMD_DRAW_LINES: {
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
const size_t count = cmd->data.draw.count;
SDL_assert(count >= 2);
SetDrawState(data, cmd, SHADER_SOLID);
/* SetDrawState handles glEnableClientState. */
data->glVertexPointer(2, GL_FLOAT, sizeof(float) * 2, verts);
data->glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) count);
case SDL_RENDERCMD_DRAW_LINES: /* unused */
break;
}
case SDL_RENDERCMD_FILL_RECTS: /* unused */
break;
@ -1694,7 +1643,6 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->QueueSetViewport = GL_QueueSetViewport;
renderer->QueueSetDrawColor = GL_QueueSetViewport; /* SetViewport and SetDrawColor are (currently) no-ops. */
renderer->QueueDrawPoints = GL_QueueDrawPoints;
renderer->QueueDrawLines = GL_QueueDrawLines;
renderer->QueueGeometry = GL_QueueGeometry;
renderer->RunCommandQueue = GL_RunCommandQueue;
renderer->RenderReadPixels = GL_RenderReadPixels;

53
src/render/opengles/SDL_render_gles.c
View File

@ -560,47 +560,6 @@ GLES_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_
return 0;
}
static int
GLES_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
{
int i;
GLfloat prevx, prevy;
const size_t vertlen = (sizeof (GLfloat) * 2) * count;
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
/* 0.5f offset to hit the center of the pixel. */
prevx = 0.5f + points->x;
prevy = 0.5f + points->y;
*(verts++) = prevx;
*(verts++) = prevy;
/* bump the end of each line segment out a quarter of a pixel, to provoke
the diamond-exit rule. Without this, you won't just drop the last
pixel of the last line segment, but you might also drop pixels at the
edge of any given line segment along the way too. */
for (i = 1; i < count; i++) {
const GLfloat xstart = prevx;
const GLfloat ystart = prevy;
const GLfloat xend = points[i].x + 0.5f; /* 0.5f to hit pixel center. */
const GLfloat yend = points[i].y + 0.5f;
/* bump a little in the direction we are moving in. */
const GLfloat deltax = xend - xstart;
const GLfloat deltay = yend - ystart;
const GLfloat angle = SDL_atan2f(deltay, deltax);
prevx = xend + (SDL_cosf(angle) * 0.25f);
prevy = yend + (SDL_sinf(angle) * 0.25f);
*(verts++) = prevx;
*(verts++) = prevy;
}
return 0;
}
static int
GLES_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const float *xy, int xy_stride, const SDL_Color *color, int color_stride, const float *uv, int uv_stride,
@ -850,15 +809,8 @@ GLES_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vert
break;
}
case SDL_RENDERCMD_DRAW_LINES: {
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
const size_t count = cmd->data.draw.count;
SDL_assert(count >= 2);
SetDrawState(data, cmd);
data->glVertexPointer(2, GL_FLOAT, 0, verts);
data->glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) count);
break;
}
case SDL_RENDERCMD_DRAW_LINES: /* unused */
break;
case SDL_RENDERCMD_FILL_RECTS: /* unused */
break;
@ -1122,7 +1074,6 @@ GLES_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->QueueSetViewport = GLES_QueueSetViewport;
renderer->QueueSetDrawColor = GLES_QueueSetViewport; /* SetViewport and SetDrawColor are (currently) no-ops. */
renderer->QueueDrawPoints = GLES_QueueDrawPoints;
renderer->QueueDrawLines = GLES_QueueDrawLines;
renderer->QueueGeometry = GLES_QueueGeometry;
renderer->RunCommandQueue = GLES_RunCommandQueue;
renderer->RenderReadPixels = GLES_RenderReadPixels;

91
src/render/opengles2/SDL_render_gles2.c
View File

@ -692,63 +692,6 @@ GLES2_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL
return 0;
}
static int
GLES2_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
{
const SDL_bool colorswap = (renderer->target && (renderer->target->format == SDL_PIXELFORMAT_ARGB8888 || renderer->target->format == SDL_PIXELFORMAT_RGB888));
int i;
GLfloat prevx, prevy;
SDL_VertexSolid *verts = (SDL_VertexSolid *) SDL_AllocateRenderVertices(renderer, count * sizeof(*verts), 0, &cmd->data.draw.first);
SDL_Color color;
color.r = cmd->data.draw.r;
color.g = cmd->data.draw.g;
color.b = cmd->data.draw.b;
color.a = cmd->data.draw.a;
if (!verts) {
return -1;
}
if (colorswap) {
Uint8 r = color.r;
color.r = color.b;
color.b = r;
}
cmd->data.draw.count = count;
/* 0.5f offset to hit the center of the pixel. */
prevx = 0.5f + points->x;
prevy = 0.5f + points->y;
verts->position.x = prevx;
verts->position.y = prevy;
verts->color = color;
verts++;
/* bump the end of each line segment out a quarter of a pixel, to provoke
the diamond-exit rule. Without this, you won't just drop the last
pixel of the last line segment, but you might also drop pixels at the
edge of any given line segment along the way too. */
for (i = 1; i < count; i++) {
const GLfloat xstart = prevx;
const GLfloat ystart = prevy;
const GLfloat xend = points[i].x + 0.5f; /* 0.5f to hit pixel center. */
const GLfloat yend = points[i].y + 0.5f;
/* bump a little in the direction we are moving in. */
const GLfloat deltax = xend - xstart;
const GLfloat deltay = yend - ystart;
const GLfloat angle = SDL_atan2f(deltay, deltax);
prevx = xend + (SDL_cosf(angle) * 0.25f);
prevy = yend + (SDL_sinf(angle) * 0.25f);
verts->position.x = prevx;
verts->position.y = prevy;
verts->color = color;
verts++;
}
return 0;
}
static int
GLES2_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const float *xy, int xy_stride, const SDL_Color *color, int color_stride, const float *uv, int uv_stride,
@ -1183,39 +1126,8 @@ GLES2_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *ver
case SDL_RENDERCMD_COPY_EX: /* unused */
break;
case SDL_RENDERCMD_DRAW_LINES: {
if (SetDrawState(data, cmd, GLES2_IMAGESOURCE_SOLID) == 0) {
size_t count = cmd->data.draw.count;
if (count > 2) {
/* joined lines cannot be grouped */
data->glDrawArrays(GL_LINE_STRIP, 0, (GLsizei)count);
} else {
/* let's group non joined lines */
SDL_RenderCommand *finalcmd = cmd;
SDL_RenderCommand *nextcmd = cmd->next;
SDL_BlendMode thisblend = cmd->data.draw.blend;
while (nextcmd != NULL) {
const SDL_RenderCommandType nextcmdtype = nextcmd->command;
if (nextcmdtype != SDL_RENDERCMD_DRAW_LINES) {
break; /* can't go any further on this draw call, different render command up next. */
} else if (nextcmd->data.draw.count != 2) {
break; /* can't go any further on this draw call, those are joined lines */
} else if (nextcmd->data.draw.blend != thisblend) {
break; /* can't go any further on this draw call, different blendmode copy up next. */
} else {
finalcmd = nextcmd; /* we can combine copy operations here. Mark this one as the furthest okay command. */
count += cmd->data.draw.count;
}
nextcmd = nextcmd->next;
}
data->glDrawArrays(GL_LINES, 0, (GLsizei)count);
cmd = finalcmd; /* skip any copy commands we just combined in here. */
}
}
case SDL_RENDERCMD_DRAW_LINES: /* unused */
break;
}
case SDL_RENDERCMD_DRAW_POINTS:
case SDL_RENDERCMD_GEOMETRY: {
@ -2095,7 +2007,6 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
renderer->QueueSetViewport = GLES2_QueueSetViewport;
renderer->QueueSetDrawColor = GLES2_QueueSetViewport; /* SetViewport and SetDrawColor are (currently) no-ops. */
renderer->QueueDrawPoints = GLES2_QueueDrawPoints;
renderer->QueueDrawLines = GLES2_QueueDrawLines;
renderer->QueueGeometry = GLES2_QueueGeometry;
renderer->RunCommandQueue = GLES2_RunCommandQueue;
renderer->RenderReadPixels = GLES2_RenderReadPixels;